On our way home from Yellowstone we decided to stop and take a look. Out of state residents have to pay a $5 park fee and the Cavern Tour is 2 hours and costs $10 for adults and $5 for children. The Tour is about 2 miles long, 3/4 mile uphill to the entrance 1/2 mile through the caverns and 3/4 mile back on a flat path. The guide was funny and informative. The Caverns were awesome to see and my 6 year old grandson had a great time. All the staff from the people down below (where we paid for park entrance) to the guides and other people up top were helpful and friendly. This put our drive home back about 3 hours but it was well worth it. Will probably stop again when we bring our other grandchildren to Yellowstone.
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