When You Constantly Push Your Limits You Will Never Reach Them

Crystal Lake Cave

The beautiful rock formations found inside Crystal Lake Cave are literally two million years in the making. The cave system has been described as an underground labyrinth of wondrous mineral formations.With every step you take through the cave you will see a wide range of pristine stalagmites, helictites, and rare anthodites. Crystal Lake Cave offers two amazing tours, through this underground wonderland. The first tour is the general tour, which is a 45 minute guided tour, on flat paved walk ways. This tour takes you past some amazing formations, including; the Swiss Cottage Roof, the Lop-Eared Dog, The Cliff Dwellers, and the gorgeous Lost Gardens! The tour is well lit, and is ran by friendly, expert guides.The second tour is called the Wild Tour, and for good reason. This tour is a spelunkers delight. Brave thrill seekers, are guided through unexcavated and narrow passageways. You will see sections of the cave that very few have seen before. This tour is done mostly on your hands and knees, so knee pads are needed and a hard hat must be worn. The tour lasts an hour and a half and is perfect for the more adventurous members of your group.The Crystal Lake Caves gift shop is packed with all kinds of mineral-related keepsakes, and the kids will love the Mining Sluice, where they can uncover precious gemstones, fossils, and other hidden treasures using water and a sifter.

With two different tours to choose from, and a beautiful sheltered picnic area, Crystal Lake Cave is the perfect destination for your next family Adventure! The cave opens in May and closes again in mid October.We recommend calling and checking hours before planning a trip.

Phone number

563 556- 6451




6684 Crystal Lake Cave Rd

Dubuque, IA 52003




  1. Brandon


  2. tashapl

    What a beautiful cave!

    • marklongmainstream

      Yes, Crystal Lake Cave is amazing! Thank you for reading.

  3. Yasmin

    This place looks beautiful

  4. Greta

    This cave is so beautiful, we will be planning a visit this summer. Never knew a cave like this was so close to Chicago. My kids will love this!!

    • Jan kabat

      Blue mounds caves are closer, near Dodgeville Wisconsin

  5. Val

    This cave looks so beautiful! Love your website too, many of these locations are only a day trip from Chicago thanks for posting this story we will be visiting soon.

    • marklongmainstream

      Thanks for reading Val, I just returned home from the cave again this weekend. Took our youth group for a tour. As many times as I have been there I still see something new every time.

  6. Claire

    What a beautiful cave, we can’t wait to visit.

    • marklongmainstream

      I love this cave, its one of the best in the Midwest.

  7. Olivia

    Can’t wait to bring my daughter here!

    • marklongmainstream

      Thanks for reading, my kids love the cave, i’m sure your daughter will too

  8. Angie

    This place is beautiful!

  9. Diana

    Never knew such a beautiful cave existed, this close to Chicago.

    • marklongmainstream

      This cave has more crystal formations then any show cave in the Midwest. One of my all time favorites.

  10. Karen

    Wow! Beautiful pictures, we will be visiting this weekend. Thank you for the information our kids are very excited.

    • marklongmainstream

      That’s great Karen, I will be giving tours on Saturday and Sunday, make sure you say hi.

  11. Emma

    Visited the cave today and had a wonderful time! Love you website too, can’t wait to see where you send us next.

    • marklongmainstream

      I was there all day today. I may have even been your tour guide. Thanks for coming and glad you had a good time. Also thank you for following my page. Im working real hard to make it the best Adventure website in the Midwest.

  12. Bree

    Thanks for writing this story we would of never known this cave existed my family had a great time the tour guide did an amazing job beautiful cave lots of good items in the gift shop thank you

  13. Mashacoata

    This cave is so beautiful, cant wait to visit!!

  14. Amanda

    Thanks for telling us about this place, the kids loved the cave tour and we even bought some rocks and panned for gemstones. The tour guide did a great job we will have to visit some of your other locations next weekend.

    • marklongmainstream

      Did you visit today? I may have been your tour guide.

  15. AnnaTitowa

    We are coming to Iowa this weekend to visit all the caves maquoketa caves the spook cave and of course crystal lake cave. Our son is very excited and has been looking at all your pictures. Thanks for helping us plan our family getaway!

  16. Brady

    Wow! Beautiful pictures gonna stop by for a vist when I pass through Iowa

  17. StepanMed

    We had a great time visiting the cave today, thanks for the info. The kids want to visit more caves now. Thank you!

  18. Rich

    We enjoyed our visit to the cave this weekend the guide had a lot of information we may return and do the wild tour at some point to thanks for this article my family enjoys this page

    • marklongmainstream

      Thanks for reading Rich, glad you enjoyed your visit!

  19. johhnySal

    Planning our trip here August 5th! #Excited

    • marklongmainstream

      Thanks for reading! I will be giving cave tours that weekend so make sure to say hi.

  20. Susanne Cruz

    We recently visited the cave, it was smaller then we had visioned, but it was beautiful! The tour guide was great, and I even bought some jewelry from the gift shop. We had such a fun time. Thank you for the information, we love your website and check it every weekend to see what fun adventure you will send us to next.

    • marklongmainstream

      That’s great! I love hearing about my readers Adventures. Thank you for reading!

  21. MarthaWinna

    Absolutely beautiful cave thank you for sharing this, we had a wonderful time!

  22. RobNen

    We decided to stop by on our way back to Chicago, its a little off the beaten path, but well worth the trip. My kids are already wanting to return. Nice article!

  23. Bre

    We had such a great time on the tour, the picnic area was a little dirty though, over it was a good experience.

  24. Cassie

    Wow, this place is beautiful can’t wait to visit.

  25. Michaelskino

    This was the highlight of our trip to Iowa. Thanks for posting this.

  26. Toni

    I had visited when I was a child, and had completly forgotten about the cave. Thank you for the article it was like a blast from the past currently planning to visit with my grand kids. Thank you.

  27. Vanna

    We had a wonderful time, cool history on the cave and the gift shop was nice too, thanks for sharing!

  28. Marcus

    Can’t believe they charged me to get inside, your article never mentioned any fee. This was bogus, we drove an hour to get there just to get charged an entry fee. the cave is beautiful but come on, it should be free.

    • marklongmainstream

      It’s a business and they have a ton of overhead, if they did not charge, the cave would not be open. Sorry for the confusion, did not mean to mislead anyone with my article.

  29. Sara

    Planning our visit this weekend, can’t wait!

  30. Mike

    This cave is much smaller then the pictures show, still a beautiful cave though

  31. Jess

    We really enjoyed our visit, and we even panned for gemstones. Thanks for sharing this cave with our family.

  32. Charles

    Love visiting this cave, one of my favorites!

  33. Jen

    We are planning a visit to Galena next month, guess we will have to hope across the bridge into Dubuque and visit the cave. We love this site and all the adventures you write about.

  34. Deigo

    Visited this and spook cave this year, both where cool caves but crystal lake cave is amazing. cool post

  35. CharlesShody

    Beautiful cave. nice article!

  36. Liz

    Hi! This is my first visit to your blog! I love that you feature Midwest locations/adventures. We are going to the cave next weekend, and plan to visit some of the other Iowa locations before summer is over. Looking forward to visiting all the locations you write about.

  37. Greg

    Took the kids last weekend, had a great time!

  38. Michaelskino

    Really enjoyed our visit, had no idea caves like this existed. Thanks

  39. Kelly

    I used to work here during H.S. great family owned business and cool show cave.

  40. Rick

    We thoroughly enjoyed our visit, thanks for the information!

  41. Craig

    Please explain to me why these caves think its okay to charge admission. Do us a favor and lose the tour guide and the fee, and this place would be a whole lot better. Don’t get me wrong the cave was beautiful, but its part of nature and nature should always be free.

    • marklongmainstream

      They have to charge it’s a business, no state funding, like some of the wild caves. Sorry if my article did not make that clear, never meant to cause confusion.

  42. Jill

    We are visiting tomorrow and I can’t wait

  43. KWQC

    Very informative piece you got here! Sharing this page on my news feed. Love this site, wish I had more time to visit some of these places.

  44. Erin

    Do you work at the cave? We want to hire a guide to take us through.

  45. Skinner

    We want to visit next weekend, do you know of any camping locations nearby?

    • marklongmainstream

      The Mines of Spain is only a mile away

  46. Jared

    Hoping to visit later this month.

  47. Charles

    Pretty cool webpage, love that its all close to home. Visited the cave yesterday on our way to davenport. We had a nice time, the tour guide seemed new but the cave looked great.

  48. Jimmy

    I don’t usually comment on these sort of things, but after reading that guy complaining about the price of admission I have to say something. First off you have to pay admission, because its a business. Do you understand how a business works? I’m sure the cave has a lot of over head, guides, electricity, advertising, staff. Do you think all of this comes free? I for one am glad to give my money to a place like this. This is small business, they create jobs, and provide a fun family experience. Look around at the wild caves in Iowa, none of them have crystals like this. That’s because they have a staff to make sure no one breaks and takes them home. Quit complaining on someones blog about a small business trying to earn a buck. For anyone reading this, the cave is well worth the price of admission. Sorry for the long rant.

  49. EdythMew

    We took a visit on sunday I think you are our guide beautiful and fun cave tour. Thank you for telling me about your blog i will be sharing mine very soon i have great pictures to share with you and everyone. Very good blog post coming soon.

  50. Todd

    Beautiful cave and very good article too.

  51. Jamie Clays

    We really enjoyed meeting you and touring the cave, thank you for this great website!!

  52. TJ

    We had a fun tour and took several beautiful pictures. Thanks for the recommendation.

  53. Raul

    We took our cave tour and had a good time, but it left me wanting more. Along our tour we came across several passageways that have not been explored. Is it possible I could plan a visit in full spelunking gear, and explore these sections of the cave. I would even help map them out for you.

    • marklongmainstream

      Hi Raul

      Thank you for reading and thank you for visiting the cave. Crystal Lake Cave offers a wild cave tour, through the passages that you are talking about. They require a reservation to book this tour, you can make that be calling the cave office. If you are looking for something beyond that, then you will need to call the cave and talk to Julie.

  54. MikeGlape

    I will have to make plans to visit! Well written.

  55. yoiji

    По заказу клиента мы нашли автомобиль который его интересовал
    По заказу клиента мы нашли автомобиль который его интересовал по запросу продать тойоту рав4, продать тойоту рав 4, продать тойоту рав4 киев . Договорившись о встрече с продавцом мы с клиентом приехали на осмотр автомобиля . После небольшого технического осмотра, стало понятно , что автомобиль находится в надлежащем техническом состоянии, за исключением нескольких царапин на кузове и небольших потертостей салона которые с легкостью можно было устранить.Указав на эти недостатки, продавец опустил цену на их устранение, и окончательная цена устроила нашего клиента. В итоге мы купили у клиента новую модель рав 4 (Истрия описана тут) ,и помогли подобрать необходимое транспортное средство которое хотел клиент, в итоге он остался с автомобилем и необходимыми средствами для бизнеса и все остались довольны

  56. American Outdoors

    Love your website design, Fantastic work! Love the idea for all the adventures. I imagine this sort of list is very helpful for people looking for a little excitement. I enjoy following you’re page and look forward to seeing more great locations very soon.

  57. Outdoor Living

    Very well written article! We enjoy the work you’re doing on this webpage.

  58. Dannielle

    I really like what you guys are up too. Visited this cave many times, its always cool inside. Haha! JK!

  59. barry

    Beautiful Cave and a well written article. Thanks

  60. Charlotte

    Enjoyed the tour, the guide was young but she did a nice job.

  61. jaredpz

    I need to visit, looks fun

  62. National Cave Association

    I have seen several of our members featured on this page. Love the attention being given to the show caves. Keep up the good work!

  63. hantsods

    la respuesta Justa
    Cute bikini sluts play so erotically

  64. Dennis

    Hey everyone! What a beautiful cave you have here. I enjoyed reading this article,and I look forward to taking a visit. I like the way you write about Midwest attractions of this nature. Very nice webpage here. I will visit more of these locations, my only regret is finding this site at the end of summer and not the beginning. But oh well I’m still young enough to visit every one of them.

  65. Greco Matt

    Hey Mark

    Great article here, maybe someday I will actually get to join you on one of your adventures. Until then I will enjoy reading about them here.

  66. Cecilia

    We are planning to visit tomorrow on Labor Day! Really excited, thanks for the information.

  67. Habeem Avkbar

    Hello my family enjoyed visit to this cave this place is very nice wife bought a rock in the store nice very nice. You to should visit.

  68. Dave and Jamie

    We had a great experience at the cave today! Thanks for the invite it was good seeing you again. The girls want you to take them on a wild tour nxt time.

  69. Clinton Lousy

    love fishing and camping and crystal lake cave

  70. harvey

    Love Love Love beautiful underground masterpiece

  71. Betty

    My favorite Iowa destination!

  72. Sandirsiz

    Just beautiful! I need to visit this place.

  73. Alfred

    Beautiful cave my family enjoyed our tour very much.

  74. Gus

    Beautiful cave, friendly staff, well worth the drive.

  75. Michael

    We are coming to tour on Sunday can’t wait!!

  76. Emmit

    Love this cave been here once before i was married. Need to bring the kids this spring.

  77. Rose

    Any spiders in the cave?

  78. Merisol

    We had a lovely visit, our tour guide had a lot of great info about the cave’s history, everyone was very friendly, they also have a nice gift shop with rocks from all over the place and a picnic area as well. Nice day trip with my family, we will be back.

  79. Carmen

    Oh wow this place is so beautiful, love it and planning to take the kids this spring. Great post!

  80. Linda

    What a beautiful cave! Need to visit when they open.

  81. Chuck

    cool pics

  82. Sharky

    Is there an option to explore the cave without a guide like maquoketa caves? I would enjoy this much better.

  83. Dave Johnson

    Spent the weekend in Galena with my wife and decided to take a drive to see the cave. 2 things really surprised me on our visit. The size of the cave was unbelievable much bigger then anything at the State parks. Second the cave has some beautiful formations inside. Never see these at Maquoketa Caves or any other wild caves in the area. Very impressive.

  84. Brett

    Beautiful cave and friendly staff.

  85. Wade Mamgaili

    we visited for our class reunion, had a great time.

  86. Jason The Cave Explorer

    When does this open for the year, planning a trip to Iowa and want to include the cave.

  87. kohlek

    В конце года подводятся итоге конкурса МЧС «Созвездие мужества», по итогам конкурса называют лучших пожарных, диспетчеров, водолазов и других работников служб спасения. Подробнее читайте на сайt.

  88. Mike

    Interesting history in this article, I thought the only caves in iowa are the makoteka caves. Will have to plan a visit when they open back up.

  89. Bobby

    Never knew such Iowa had such beautiful caves! Thought it was all corn fields and rivers. Going to have to plan a road trip and check out some of these caves next spring.

  90. Kuhni Hex

    Кухни на заказ Нижний Новгород кухни Нижний Новгород

  91. Richard Rene

    Looks beautiful! I want to visit.

  92. Marilyn

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  93. Elisabeth

    This cave is so much fun!

  94. Thomas

    I used to live in the area. Been to the cave as a child but do not reme=mber much. Might have to stop on my way to Chicago this summer.

  95. Ed and Tig

    Very good info, love your body of work. Always good to get youth up and out exploring.

  96. felicia

    Came here last summer, I think you were are guide. Just wanted to tell you that you are gorgeous. My kids had a good time too. Hopefully you still work here cause we will be back in this year.

  97. Scott

    This is a very nice smaller cave.

  98. Linda

    Lovely, just lovely!

  99. Emma

    We visited over the summer, the tour was great. The cool cave air was refreshing on the hot summer day.

  100. Syrup lover

    This cave sells the best maple syrup around!

  101. loretta


  102. Midwest Travels

    You make this cave sound amazing, we shared the article on our Facebook page. Nice work!

  103. Diana

    Another cave tour! Summer bucket list

  104. WQAD

    Hi Mainstream! Any events coming up? Which side of the Quad Cities has the best Adventures? We would be interested in doing a piece on local adventures, this spring. You seem to be the local authority on the subject. If you are interested please contact our media office at 309-764-8888. Thanks

  105. Outdoor weekly

    You make this cave sound so beautiful, I guess that’s the point. Great article and beautiful pictures.

  106. Michel55

    very nice writing here you makde this place sound so lovely i will see what place you write about next.

  107. Daddy Mack

    always enjoyed this cave a a child, wonder how much its changed.

  108. Byron

    I need you to write an article for my campground. How do I make this happen?

  109. Mike33

    A well written article, loved the pictures as well. Need to plan a trip.

  110. Desirae

    Just what I was looking for.

  111. Maurice Smith

    Very cool post here, love visiting show caves, had no idea one was so close. Need to visit when they open back up.

  112. Laura

    What a beautiful cave and Julie and the girls are so wonderful.

  113. Kev

    I need to check this out

  114. Chase Foley

    Wow you made this place sound to cool, never heard of it before, need to take a visit when they open

  115. The Cave Master

    Looks great! glad to see someone else with a passion for spelunking

  116. Joseph


  117. Luther

    This is an excellent article. This site has lots of interesting places, i want to hire you to plan our vacations.

  118. Albert

    Many thanks for sharing with us, I always learn about such cool places on this page.

  119. Darrell

    Just beautiful!

  120. Michelle

    you make this cave sound awesome I need to take the fam up there this summer!

  121. Brandy

    Beautiful cave!

  122. brian

    Hi I was wondering if there is lodging available here, camping or cabins or anything?

    • marklongmainstream

      There is not lodging at the cave, but the Mines of Spain is nearby and has several camping locations.

  123. Jennifer

    This is one of the most beautiful caves in the midwest.

  124. Rozanne

    I visited with my husband last fall, we had a great time. The cave is beautiful and the guide had a lot of interesting facts about the cave!

  125. Big Johnson

    Thank you for helping people find the information they need on all these great adventures. Good stuff as usual. Keep up the great work!!!

  126. Carol

    We love this cave!

  127. Hector

    So pretty.

  128. Neil

    The hours listed on the caves website are extremely confusing, so i want to bring my family down this weekend from Chicago to tour the cave. Does anyone know if it will be open?

    • marklongmainstream

      I believe its open 9-5 on Saturday and 9-4 on Sunday.

  129. Sig

    We visit every year and love it!

  130. Valerie Norton

    We are visiting this weekend, can’t wait!

  131. Nathan

    Hi Mainstream, do you know if they have camping on location or nearby? Last question; do they offer any group rates? We have about 20 inner city kids and 6 adults we would like to bring by for a visit. Thank you

    • marklongmainstream

      They do not have camping, but the mines of Spain is really close. Yes they offer a group discount, just not exactly sure what it is. You will have to call them and speak with Julie.

  132. Jose

    Gorgeaous cave and fridndly staff. Only complaint i had was that gps took me down town into dubuque and its actually out in the country a bit.

  133. Brian

    Many thanks for sharing with us, I always learn about lots of fun new locations on your page.

  134. Paige

    I just went there yesterday and stopped at Mines of Spain afterwards! Really good adventure day!

  135. Owen

    Beautiful! A masterpiece for sure!

  136. Laura and David

    With Maquoketa closed i bet this place will be busy.

  137. Brenton

    wild tour sounds cool

  138. Manny

    Many thanks for sharing, I always discover interesting things from this page.

  139. El


  140. Lara

    T read through this website and you have so many cool locations and places to visit. Good work!

  141. Jameshauro

    I enjoy everything you post. You’ve done great job

  142. Thomas

    This looks beautiful, and would be a fun way to cool down on a hot day like today.

  143. Jake

    Looks awesome.

  144. Audra

    This cave is small, the tour only took about 45 minutes. But there is a lot to see every step of the way. Very well run, with very informative tour guides.

  145. Daryl

    Loved it!

  146. TimothyCal

    Heading this way next weekend, when we visit Galena. Looks cool.

  147. jamie

    This looks beautiful, how long does the tour take?

  148. Barb

    We had some very rude people in our tour group, the guide did her best to keep them focused on the tour but i really was not able to enjoy it at all. I tried to speak with the owner and let her know my frustrations but she was already gone. Whoever you are thanks for ruining the tour for the rest of the group. Not nice!

  149. Dennis

    I will have to visit this cave, very pretty!

  150. Tom

    Lots of interesting history in this cave. Most people don’t know but during Prohibition, this cave hosted wild drinking parties.

  151. Andrew

    This could be a fun road trip!

  152. Amalia

    Lovely pictures!

  153. Merl

    This could be a fun place to bring the grand kids.

  154. Eddie

    One of our favorite summer destinations.

  155. Austin

    The article should mention that you might get your feet wet. Not bad but needs to be mentioned. We really enjoyed our tour beautiful cave,even with the wet toes.

  156. Nia

    We visited yesterday, the girls and I had a great time. Thank you for sharing your locations will all of us.

  157. Bruce

    Great post, I love it a lot. Lots of variety for adventure.

  158. Bruce Edins

    Good post, I enjoyed it so much.

  159. Raymond

    I bet its cool in here, need to visit on a hot ass day

  160. Harry

    nice article good website

  161. Marcie

    I love visiting the caves. To bad Maquoketa is closed for the year. Guess I will just get my cave fix here.

  162. Wayne Miller

    Wow this is so cool

  163. Barb


  164. Nik

    We had a good visit, the cave water was so cold on my feet. Nice place.

  165. David

    I need to visit here this summer with Maquoketa caves being closed this is our only outlet in iowa

  166. Joan

    We had a very nice visit to the cave yesterday. So many beautiful formations and knowledgeable guides.

  167. Jill

    Hi, love the website, have not been to the cave in years. I may have to visit this summer with the other caves being closed all year.

  168. David

    Planning to visit on the 4th! Hope its worth the trip.

  169. Kelsey

    beautiful cave and nice gift shop, i will be posting the pictures on the I grew up in Iowa Facebook page. Thank you!

  170. Joseph

    Visited on the 4th and had a great tour, thanks for sharing!

  171. Anthony

    we had a fun visit, nice and cool on a hot day

  172. Tony

    Looks like a nice break from the summer heat!

  173. Calliey

    Went here over the weekend, it was beautiful.

  174. Brent

    Nice cave and helpful guides. They even made suggestions on other activities in the area. Thanks for a pleasant experience.

  175. Kathrine

    The cool cave air was so refreshing on a muggy day. Neat history of the cave as well.

  176. Danielle

    We had a great visit, the cave air was so refreshing. The gift shop had all kinds of fun items for sale. Thanks for sharing.

  177. Dory

    Been here many times. Beautiful cave.

  178. Jean

    Looks cool

  179. Mary

    I was expecting this to be like Maquoketa caves only pettier, but its totally different. Well worth the trip.

  180. Henry

    Nice little show cave!

  181. Sam

    Nice tour!

  182. Leon

    Went on the wild tour with Eli and had a great time!

  183. Happy Momma

    The guide was so nice to my children, they asked a million questions and the guide answered every single one of them. We had a great time and will be back next summer as well. Thank you for such a memorable experience!

  184. Kiera

    This was a lot cooler then I thought it would be, the cave is beautiful and has a fascinating history as well.

  185. Vince

    We thoroughly enjoyed our tour! The guide did a nice job and the cave was beautiful.

  186. Daniel AdalA

    Друзья, пожалуйста, помогите ребенку! Не проходите мимо!
    Когда Эмир родился, он не заплакал и даже не задышал. Врачи допустили ошибку в принятии родов. Малыша перевели в палату интенсивной терапии в роддоме. На 3 сутки перевезли в реанимацию при 1 детской городской больнице Казани. Там родителям сказали, что ребенок очень тяжелый и даже при хорошем уходе проживет самое большее до двух лет, что лучше будет от него отказаться. Мальчику уже 7 лет, он живет и счастлив рядом с мамой и папой. Наблюдается, пусть и небольшая, положительная динамика. Родители Эмирчика стараются, как могут, сделать все, чтобы облегчить его страдания. После очередной сложнейшей операции ребенку требуется дорогостоящая реабилитация, но у родителей, к сожалению, нет таких денег, и они вынуждены обратиться за помощью к добрым людям. Пожалуйста, не проходите мимо чужой беды!

  187. Sergi

    took a visit while stateside a fine cave in iowa rich with history and wonder

  188. Allison

    Thanks for the invite, we had a good time and the kids even panned for gemstones.

  189. Gabriel

    I had only ever heard of the maquoketa caves but these are beautiful. I will be checking them out very soon thanks.

  190. Marge

    Nothing to add, just I love to spend time on this website!

  191. Mia

    Looks beautiful!

  192. Stacey

    Been here once when I was little, its a nice tour and a fun learning experience.