The Aggitis River Cave in Greece is one of the largest and most spectacular river caves in all of Europe. It is located in the area of Drama.

A jungle inside a cave? A roof collapse long ago in ... a corridor shaped like a V with a foot-deep trench of water at the bottom. Mud walls, sticky as peanut butter, rise 40 feet high on either ...

Bacteria color the water at a depth of 30 to 36 feet in ... We descend slowly along the cave's east wall until a triangular portal appears in our lights: the entrance to a 2,500-foot-long tunnel ...

But the caves formed due to the slow action of lake water, which dissolved minerals in the rocks until the walls crumbled. Researchers think this occurred over the past 10,000 to 15,000 years ...

Its white walls were scalloped ... the doctoral student who’s been studying the microbial life in the caves, hikes in to take water samples. He brings good news: He’ll return to collect ...

He captured images of the cave’s inside walls and views of the Allegheny River and Tarentum from the cave’s opening. An interesting detail in some of Drum’s photographs is what appears to be ...