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    Crystal Onyx Cave

    4.9 (107 reviews)
    Open 10:00 am - 6:00 pm
    Updated 3 months ago

    Crystal Onyx Cave Photos

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    Crystal Onyx Cave
    Mark C.

    Crystal Onyx Cave is a must-visit for anyone traveling through Kentucky--an extraordinary underground experience that combines natural beauty, educational value, and genuine hospitality. It's the kind of destination you'll tell friends about long after you've left the surface.

    Mary M.

    Unbelievable combination of Natural beauty and oddity...welded structure s on site full of curiosity, ET-like characters,a dolphin up in a tree, a mermaid in the woods...

    Crystal Onyx Cave
    John D.

    Cave New World Discovered in 1960, Crystal Onyx Cave opened in 1965 as a tourist destination before falling into disrepair and closing in 2009. Fortunately, it was soon bought up in 2010 by new owners Scott & Sara who completely remodeled the place with lots of TLC and re-opened it to the public in 2018. The Good: *Our tour guide, Naomi, was really fantastic, and we were impressed with her gift of gab--especially considering her young age. *Cave is a nice svelte 58°F (14°C) year-round, which is a great escape from the KY heat. *Impressive lighting as this was easily one of the best lit caves we've visited. *All the safety equipment (e.g., guardrails, stairs, trails, etc.) were in tip-top shape. *Amazing rock formations, stalactites, and stalagmites. This place is so different from Mammoth Cave, which is more of a giant tunnel than rock formations. *Good bang for the buck ($18/adults $13/kids) for an approximate 2hr tour that flies by quickly. *Interesting collection of statutes and tchotchkes *Gift shop The Meh: *3% surcharge on CC transactions *Not ADA compliant *Not pet-friendly The Ugly: *There's two different cave tours, but you don't really get to pick which one as it's chosen at their discretion?? I mean, I don't really care, I guess, but it's just a bit odd... ¯\_(ツ)_/¯ TLDR: If you're into caves and in town to visit Mammoth Cave, then put Crystal Onyx on your short list of things to do while in the area. #WorthIt

    Various calcifications
    Jennifer W.

    Charolay was a very educational & informative tour guide! I highly recommend the Crystal Onyx Cave in Cave City, KY! You won't be Disappointed! Spectacular views & great geographical knowledge & was a very informative guide! Thank you Charolay! We appreciate it! Sid & Jen

    My husband and I love seeing the show caves of America and it has become our special thing to do together. This was our 19th cave that we have toured. We have toured all of the caves in Ohio (our home state), Indiana, and Virginia. We have toured some in Tennessee and about half of the caves in Kentucky. Crystal Onyx is currently our favorite tour in Kentucky and among our Top 5 overall. We visited today as the last tour of the day and explored the Upper Level. Our tour guide, Jack, was phenomenal. He is in our top two of tour guides that we have ever had on any tour. He was extremely knowledgeable and told us information that we had never heard before which is hard to do with the amount of different tours that we have been on. He had a super positive attitude and you could tell that he is passionate about the cave itself and loves what he does. He never once tried to rush anybody and was patient even though the tour was encroaching on closing time. The cave humor also gets five stars. The cave itself is beautiful and we loved hearing about how the owners fell in love with Crystal Onyx Cave and all of the hard-work and dedication they put in to restore the cave. The cave has several unique features and our favorite part might've been seeing the cave salamanders. We also loved how the cave darkness portion of the tour is turned into a full experience and the UV flashlight use is awesome! The gift shop and tour prices are also very reasonable and quite honestly a bargain for the length and quality of the tour!

    Ashley J.

    I've visited caves around the world and this one did not disappoint. Jana was our tour guide and she was wonderful. Very fun and patient. There are a few times along the tour where you can interact with the cave and the minerals/crystals that form there. She made it interactive and interesting. There is a gift shop with an assortment of crystals and other items where you purchase tickets. They have porta-potties and plenty of parking. The road to get there is paved. There is a small fee for using a credit card and they offer military discounts. Their website says that there are about 135 steps during the tour. As a nearly 300lb person, I had no trouble climbing them. There were several small children, and my mom, who has bad knees, on the tour and they all climbed and descended without problem. Some of the stairs are steep and some are very wet. I did get a little winded twice, but it wasn't too bad. There was only a few sections where I had to duck down, but even the 6'+ people on the tour were able to duck under without problem. Maybe if you're Shaq you'd find navigating the caves a problem. These caves are family owned and operated. There are some fun and kooky statues and such around the property. I definitely recommend this tour.

    Our family stopped here while passing through and had a wonderful experience. Had called before coming because we are traveling in a 41' class A with our vehicle in tow, and Heather was super helpful and courteous, giving us directions on parking our big rig. Our family of 5 toured the lower cave, and our tour guide (can't remember her name) was patient, knowledgeable and just all around great! First experience in a cave and we were all very pleased. About an hour long and never felt rushed. The place is beautiful and we would gladly come back if ever passing through again!

    Peyton S.

    This cave is absolutely beautiful and you can tell the amount of love that the owners have put into this. Our tour had 4 people total, so very laid back with plenty of opportunities for questions. It's definitely "camp" with all of the aliens and other figures throughout the property. I loved the character the property had. There are port-a-johns, but they were clean and well maintained, and it's to keep the cave safe. Our guide was very educated on the different formations. The tour isn't strenuous at all. There is separate RV/camper parking, but the area for RVs was not pavement, mostly grass/dirt and some gravel. The day we went was kind of muddy with recent rain, so we were concerned about our rig's tires/being able to get out. Other than that, this was an amazing experience.

    Joseph G.

    Crystal onyx cave is an attraction apart of the cave city allure As it is an actual cave. They are not a part of Mammoth Cave. But as there entrance sign says "we are not mammoth, but we are spectacular". We all got a good chuckle out of that. We arrived with a large group as we had our family of 6 and our friends family was 5. Upon arrival they have a very small gravel parking lot. Not much parking available. The outside to the gift shop and tickets admission is pretty cool. They have covered tents and tables with checkers, connect fours and other fun table games. They also have all kinds of cool figurines and statues for picture ops outside of the store and inside of the store. Lots of dinosaurs and aliens. This was a theme for the whole attraction even inside the cave. For my family of 6 we had to purchase 5 tickets (baby was free) and it cost just under $80. Which for an hour long tour with nothing but a small area and walking guide is kinda pricey. Plus they tack on a 3% fee for credit cards which to me is criminal. It actually use to be illegal in Kentucky to make extra profits off credit card fees and I wish it still was. It always leaves a bad taste in my mouth when places do that. I worked in credit card processing for years and Majority of major processing companies have transaction fees well under 1.5 % and even the most expensive processors is under 3. So they are profiting more off the consumer. It's an automatic star lost on a rating from me whenever places do this. Sorry off my soap box. Let's continue.... We had about a 30 minute wait for our tour. Which took closer to 50 min but it was ok the cool picture ops and table games kept us entertained. The tour was really cool. They have an upper and lower tour and we was evidently on the lower tour. Both tours take about an hour. The tour touched upon all the same basic things that every single cave tour does. Such as the difference between stalagmite and stalactite. They all use the same jokes too as well to remember. Stalagmites are on the floor because without a flashlight you "mite" trip over them and the the stalactites hang "tight" to the ceiling. They also did the turn off the lights to show the darkness like all other cave tours do . One unique thing they do is during the lights portion they do have a uv ray light and like a strobe light that they do a few cool things with. Haven't seen that one before so that was cool. The tour Itself wasn't very much walking. You kinda stay in 3 to 4 major areas and you learn about the history there. So more of an informational tour then an exploring one. Our tour guide was the owner and she was super nice and personable. Overall we had a really good time. We've seen quite a few cave tours from mammoth, squire Boone, Indian caverns and fantastic caverns. So we are kind of cave tour vets. But this place was as cool as any of them. Not as big as those but they did have some unique things and the decor was fun for the kids.

    Brittany C.

    This place was my favorite! I loved the smaller group tour as it felt so catered to us in our group. This was my first cave tour in many years and the chill vibes were perfect for me. After doing another tour in the area, I will still recommend this one first! Before even approaching the cave I was in awe of all the art and sculptures onsite. The cave itself is amazing and gives everything you want in a cave tour! I can't wait to come back, I will continue to recommend this tour to everyone!

    Anna K.

    Kim was INCREDIBLE. So knowledgeable and endearing! I am claustrophobic and she took extra good care of me.I was blown away by how personable, FUNNY and so well informed she was!! Such an amazing tour with SO much charm and quirk!

    So interesting
    Valentina L.

    Gary was our guide and he was fun and informative. We did the tour at Mammoth yesterday with a HUGE crowd (3 bus loads) on the tour. (So annoying) this was so much better with just 15-18 people. Much more personal.

    Jack was an awesome your guide.. very entertaining too. they did a great job renovating the cave and making it your friendly.

    Cave

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    Heather was super great for our tour! 10/10 recommend. She was wonderful with kids as well. We will definitely come back.

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    Jack our tour guy was very knowledgeable with a love of caves which shone through his presentation. Great sense of humor. Beautiful cave !

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    Page 1 of 3

    Ask the Community - Crystal Onyx Cave

    Is it free to walk into?

    No, all of the caves cost admission for the upkeep. It is $16 for the upper tour and a discount of the lower tour is purchased.

    Don’t See Your Question? Ask Away!

    Review Highlights - Crystal Onyx Cave

    Had an absolutely fantastic tour of the upper cave with Charolay.

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    Hidden River Cave & American Cave Museum - World's largest underground suspension bridge

    Hidden River Cave & American Cave Museum

    4.5(80 reviews)
    6.1 mi

    For the last couple years my wife and I have taken to doing cave tours. We've done several in the…read morearea and only made it to Hidden River Cave & American Cave Museum recently. Unlike some cave attractions, you have to make a reservation to visit Hidden River. It's easy via their website. Once you arrive you can check in at the desk and then tour the museum and gift shop before your cave tour begins. The museum is self-guided and is two stories' worth of exhibits. There's a staircase that takes you down to the lower level where you'll find just as many exhibits as their is on the main floor. Everything is presented nicely, well lit, and informative. Shortly before your tour begins your tour guide will introduce himself, give you a brief overview of the cave, and then do a Q&A before heading to the cave entrance. This cave tour begins by descending some steps. A Lot of steps. The opening is very impressive, and as you ascend you can feel the temperature drop. A brief pause at the bottom of the steps and our tour guide pointed out some of the machinery left over from various uses of the cave in the past. Then it's into the cave. I love cave tours because it puts you in a place that's nothing but history. They're made by nature, often hidden for centuries, and, for all intents and purposes, somewhere that man isn't really intended to go...but we're Mankind and we do that kind of thing. Once inside the cave there are areas that are expansive and areas that are terrifically narrow. I love large, open spaces underground. Sometimes you have to remind yourself that your anywhere from 50 to over 100 feet below surface. In a fashion, it's a bit humbling. At the same time, you have to remind yourself that you're actually below a downtown area. The suspended bridge was definitely a highlight of this cave tour. Cleverly designed and installed, I'd almost consider an underground wonder. A little further along you come to the Sunset Dome, and the farther point of your tour. The Sunset Dome is a beautiful space. I just had to stop and listen to the silence. Nothing but silence, running was from an underground steam, and the occasional drop of water from above (a cave kiss). If only the others on our tour would have been to appreciate it more. After the Sunset Dome you hit rewind and head back along the same path you just took on the way in. Back cross the suspended bridge. Then back to the bottom of the staircase....which you now need to walk up. And there are A LOT of stairs. It was tough, I'm not going to lie. I'm in pretty good shape and I had to stop twice on the way up. Once you're up to the top you have a chance to visit the gift shop again and purchase a souvenir or two. I don't recall our tour guide's name, but he was pretty good. He did spent a fair amount of time patting himself on the back, stating at least 4 times that how long he'd been doing these tours and how he considered himself an expert. Weird flex, but ok. It was still a good tour and I'm glad we were finally able to get to Hidden River Cave.

    Awesome tour!!! We had the pleasure of having Al (AL is his name...he's not AI lol) as our tour…read moreguide. Very informative and kept the group uplifted and enjoyable. I would definitely recommend this tour but be aware that there are MANY steps on this tour so wear comfortable shoes.

    Photos
    Hidden River Cave & American Cave Museum - Suspension bridge

    Suspension bridge

    Hidden River Cave & American Cave Museum - Cave Museum

    Cave Museum

    Hidden River Cave & American Cave Museum - Cave ceiling

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    Cave ceiling

    Diamond Caverns - Cave stuff 4

    Diamond Caverns

    4.2(77 reviews)
    4.9 mi

    Diamond Caverns is in the vicinity of Mammoth Cave NP. What sets this place apart is the amount of…read morediverse formations you get to see on a 1-hour tour. Also, unlike the national park, Diamond Caverns is first-come first-served with no reservations. I just visited the area for the second time, this time we had a lot of family members including small children. We did the early morning Mammoth Cave beginner-level tour and then went straight over to Diamond Caverns for their tour. Everything else in the national park was sold out for the day, but we went straight onto a Diamond Cavern tour with no wait and a group of 14 of us. The tour guide was very patient with the bunch of small children in our group. Overall, I highly recommend Diamond Caverns if you are in the area and interested in taking an hour-long tour that includes a lot of steps to get up and down to/from the caverns. There is some neat local history included as well. There's a full gift shop with beverages and restrooms available on site. No food, drinks, or bags of any kind are allowed in the caverns.

    My family planned months in advance to do a road trip and stay at Mammoth Cave NP. Unfortunately…read morethe federal government shut down just before we made our visit. When looking for things to do in lieu of MCNP we ended up at Diamond Caverns. It was ok. We'd been to Carlsbad Caverns recently so this was very underwhelming. 4 stars because the staff was great. The tour guide had her script nailed and she was passionate about working there. Large gift shop. My kids loved it and sometimes at the end of the day that's all that matters.

    Photos
    Diamond Caverns - Cave stuff 3

    Cave stuff 3

    Diamond Caverns - Inside the cavern.

    Inside the cavern.

    Diamond Caverns

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    Crystal Onyx Cave - landmarks - Updated May 2026

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