Travel expert Rick Steves loves this hidden gem cave system in Slovenia full of fascinating formations. Here's what to expect ...

NASA has found a large hole on Mars. This hole might lead to underground caves. Scientists think these caves could hold alien life. The US Geological ...

The House budget includes $1.2 million to use drones for creating a 3D map to identify pollution sources threatening clarity of Wakulla Springs.

On your next road trip through Oregon, make sure to stop by the surreal cave that features cathedral-like beams of light that ...

Holes such as this are of particular interest because they might be portals to lower levels that extend into expansive underground caves," NASA said.

Whether you're drawn to geology, adventure, or simply the strange beauty of the underground, these seven caves are unforgettable stops that deserve a place on your U.S. travel map. Tucked beneath ...

State Rep. Jason Shoaf secured $1.2 million in the House budget proposal to use underwater drones to map Wakulla Springs and its connecting underground river. The project aims to create a 3D map ...

A team of NASA-funded University of Northern Iowa researchers is exploring some of the deepest caves in the United States to ...

A hidden room inside Mount Chiliad tied to UFO theories and the infamous mural, finally spotted through recent leaks.

After a year of community efforts, Wakulla County secures a $3.78 million deal to protect the Chip’s Hole cave system, preventing development and preserving the vital ecosystem.

A recent study discovered the exact location of the Yellowstone supervolcano's magma cap -- and hints at when it may erupt.