Explore and Discover One of the Last Frontiers in the World ... Jewel Cave Nat'l Monument, SD
NPS lessons for Mammoth Cave. The 'Clay Caves' activity is particularly good.
Discover underground caves in Southern Minnesota. Tour Mystery Cave and Niagara Cave featuring an underground waterfall. Both are nearby the top bed and breakfast town of Lanesboro, MN.
Glenwood Springs Colorado - Enjoy walking cave tours for all ages at Glenwood Caverns Adventure Park
Look at the Fit the Bill lesson for ideas to teach adaptations, specifically why birds have specific types of bills.
Getaways in Wisconsin: Day Trip to Cave Of The Mounds, Wisconsin
One Day Cave Exploration With Private GuideTour. Transportation included. Good price.
In Sweetwater, TN- The Lost Sea takes you underground starting with a bright yellow tunnel with a guided tour in the caverns and then on a boat along an underwater lake!
Ozarks Cave Tours Ozarks Caverns | Lake of the Ozarks State Park | Missouri State Parks
Onondaga Cave Tours - regular cave tour; Cathedral Cave Tours - 2 hour lantern tour