Through the stone

Production
2005, United States
French
00:52:00
Genre
documentary
geology
Luc-Henri Fage
Luc-Henri Fage
MDTV Productions
Docside Production

400m deep under limestone, flows a river. This cave is the famous Pierre Saint-Martin: at over 1500m depth over 50km of underground galleries collect several rivers coming out into the open air after a mysterious journey 10 km away.