Explore Goblin Valley State Park like never before as we hike to Goblin's Lair, a breathtaking hidden cave surrounded by Mars-like rock formations. This Utah desert adventure takes us through Caramel ...

Researchers on the Cumberland River say they are seeing signs of a quiet comeback from one of Tennessee’s oldest ...

The team entered the abandoned limestone mine expecting nothing more than flooded tunnels and rusted rails — but the footage captured something entirely different. Behind a narrow passage, the mine ...

Eight "skylights" may be entrances to underground spaces where evidence of ancient microbial organisms could be found.