Lyon, France - Rescue workers were conducting an operation on Monday to save two spelunkers trapped in a cave in eastern France, fire officers said.

The pair were in a party of four which was surprised by a sudden rise in the water level underground while they were exploring a cave system in the Vercors mountain area, south of the city of Grenoble.

Two of the group managed to escape, one of them with injuries, but the other two decided to wait in a grotto above the water line. - Sapa-AFP