Mammoth Cave in Kentucky is the longest cave system in the world with over 400 miles of explored passageways.
Carlsbad Caverns in New Mexico is home to over 119 caves and is known for its stunning stalactites and stalagmites.
The Luray Caverns in Virginia is a popular tourist destination with its impressive underground pools and rock formations.
The Oregon Caves National Monument in Oregon is a unique cave system with marble interiors and underground streams.
The Wind Cave National Park in South Dakota is known for its intricate boxwork formations and rare cave popcorn.
The Jewel Cave National Monument in South Dakota is the third-longest cave system in the world and is home to rare formations like helictites.
The Timpanogos Cave National Monument in Utah is a popular destination for its stunning cave formations and scenic hiking trails.
The Lehman Caves in Nevada is a limestone cave system with unique formations like the Parachute Shield.
The Blanchard Springs Caverns in Arkansas is a popular destination for its stunning underground waterfalls and crystal formations.
The Cathedral Caverns State Park in Alabama is known for its massive entrance and impressive stalagmites.