Beneath the Cornfields of Iowa...

2020 Season Update

It is with great sadness that we announce that Crystal Lake Caves will not open for the 2020 season in Dubuque, Iowa. We have chosen to cancel the 2020 cave season for the safety of the local, regional and international community as well as our employees and owners. We will be back in 2021 with a Grand Re-Opening to celebrating the International Year of Caves and Karst. Follow us on social media for updates and education on the great value of caves to humanity over the next year. 

Come Visit & Check Us Out!

With a history older than the state it’s in Crystal Lake Cave has been Iowa’s hidden treasure from the start. From gem mining where kids can discover their own fossils and gemstones in our specialized gem mining area to a gift shop full of great souvenirs and something for every everyone there’s alway plenty to see when you visit us! Come and visit to see all that we have.

A place to Explore…

Spelunking, Mining, and More! With guided tours of well-lit passages of intricate formations through over three-quarters of a mile of cave tunnels there is alot to explore and many fascinations to see. You are invited to visit and witness the ongoing miracle that created this natural masterpiece of underground panorama. Learn all that Crystal Lake Cave has to offer by exploring our website.

Get to know the cave’s history

Discovered in 1868 by James Rice this Cave was found to contain a fabulous collection of crystals including argonite, travertine, satin stalagmite, stalactite, and calcareous spar. In 1932, Bernard Markus opened the cave to the public, naming it Crystal Lake Cave. Today, Crystal Lake Cave is the longest living show cavern in the state of Iowa, and growing everyday.

(563) 556-6451

6684 Crystal Lake Cave Rd, Dubuque, IA 52003