Why it's incredible: The cave is so deep, the world's tallest building could fit inside it. The Hranice Abyss — or "Hranická propast," in Czech — is the deepest known freshwater cave in the world.

The longest Croatian mountain range isn't the tallest, but it does stretch across two counties and is home to the country's ...

Add Yahoo as a preferred source to see more of our stories on Google. I'm a severe claustrophobe. After getting trapped in a slide in my local McDonald's at five years old, I swore off all tight and ...

A researcher was rescued from Sorcerer’s Cave Sunday morning after a falling rock caused serious head and back injuries 470 feet underground. More than 60 personnel executed a grueling 17-hour ...

TERRELL COUNTY, Texas — A researcher was rescued from one of Texas' deepest known caves, according to the Texas Game Wardens. In a social media post, the Texas Game Wardens say a team was conducting ...

(via MinuteEarth) Krubera Cave, one of our planet’s deepest known caves, extends 2200 meters into the earth – that’s a depth of nearly six Empire State Buildings. Or at least, that's as far down as ...

A Florida park with the deepest freshwater cave system in the country is celebrating 78 this week. Weeki Wachee Springs State Park, home to the world-famous mermaids, first opened to the public on Oct ...

After more than six months of preparation and 14 hours underground, a group of cavers has uncovered Australia's deepest known cave, at a depth of 401 metres. The new cave, dubbed "Delta Variant", is ...