We stepped into a cave so massive, it makes sports stadiums look small. With ceilings towering hundreds of feet overhead and chambers stretching farther than the eye can see, this place defies belief.

A team of researchers from the University of Adelaide, in collaboration with cavers, has uncovered a large number of eyeless, ...

Scientists uncovered ancient avocado remains in a Honduran cave, offering genetic clues that could protect the crop from ...

Putin's puppet erupts at EU 'rainbow freaks' and 'cockroaches' in bizarre WW3 rant In his latest tirade on Telegram, the Kremlin firebrand took aim at the EU, accusing it of "besital Russophobia".

A former stone quarry, the cave holds a 100-yard-wide lake under 25-foot high ceilings. In a 1996 interview, Moline Police Chief Steve Etheridge said that beyond the lake, the cave appears to go ...

When Mijares first excavated Callao Cave in 2003, he found 25,000-year-old evidence of human activity—but he didn't dig any deeper than about four feet down.

Get the latest news headlines and top stories from NBCNews.com. Find videos and news articles on the latest stories in the US.