There’s no question that for cave lovers, Crystal Lake Cave in Dubuque is the place to be. As one of the deepest caves in Iowa, it has stunning rock formations that can only be seen through the cave’s famous tour. But the grounds are so much more than just the cave – they also have a unique gift shop, as well as the only place to go gem mining in Iowa. As a flat state, Iowa didn’t have an extensive mining history, but at Crystal Lake Cave kids will be able to engage in the authentic process – panning, sifting through their findings, and taking home the multi-colored gems, rocks, and minerals they discover. It’s the perfect souvenir to take home after a memorable day of exploring the caverns of Crystal Lake Cave.

Crystal Lake Cave is a Dubuque institution, and it's currently open for reserved tours before its 2023 season.
Mark A/TripAdvisor
The guided tours take families and guests inside one of the largest caves in Iowa for a memorable experience.
Melissa Stephani/Google Local
The cave rock formations in the caverns are unlike any other, and many even have their own names!
Management/TripAdvisor

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But the fun isn't over after you explore the cave - the old gem mining activity at the complex is a fun second act for the day.
Ashley Howerton/Google Local
A field guide to the rocks, minerals, and gems you might be able to find is on display - see what you can identify!
Crystal Lake Cave
Kids will be able to engage in the classic activity of panning and sifting to discover hidden treasures.
Kody Wilson/Google Local
And whatever they find, they keep! It's an old-school activity that will give visitors souvenirs that are a little different every time.
Hannah W/TripAdvisor

Have you taken part in this unique activity at Crystal Lake Cave? Let us know what it was like to go gem mining in Iowa in the comments section. If you want to pay a visit, make sure to visit the Crystal Lake Cave website and Facebook page for more information. For another family-friendly day trip in Dubuque, check out this two-part adventure.

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Crystal Lake Cave Road, Crystal Lake Cave Rd, Iowa 52003, USA