Minnetonka Cave opens around Memorial Day through Labor Day and about a 50 minute drive from Garden City, UT (Bear Lake) makes for a great addition to a say at Bear Lake. Bring cash or check to visit the cave, $8 for adults and $6 for kids 6-15 years old. It is a 90 minute tour through the chambers on a trail of stone and steel stairs with guard rails. The cave is 40 degrees year round, so bring a jacket. You will see underground streams, all kinds of formations, bats, and in the bottom of the cave they will turn off the lights for you to experience total darkness for a minute. We arrived in early June and found snow on the mountain which gave the kids a thrill.