Tickets to the all-new Louisville Mega Cavern Historical Tram Tour and the Mega Walking Cavern cost $19.99 per person and can be purchased at louisvillemegacavern.com.

Just south of Tucson lies one of Arizona’s hidden gems—Kartchner Caverns State Park, an active limestone cave system known for its rare, pristine formations and year-round underground climate.

WASHINGTON (AP) — The Supreme Court on Wednesday restarted plans to temporarily store nuclear waste at sites in rural Texas and New Mexico, even as the nation is at an impasse over a permanent ...

Mitchell Caverns feels like stepping into a fantasy world with its bizarre formations. The two connected caverns, El Pakiva ...