The organization sought to legitimize the cave explorers' activity through the support of original academic and scientific research.

This is the exclusive preserve of the cave explorer who cares less for personal discomfort.

For enthusiastic cave explorers, it is a second home.

Sensors were not much help in finding a lost cave explorer.

For underwater cave explorers, this can cause the optical illusion of air space in caverns.

In the 1930s a team of cave explorers found the lake and finally managed to open the grotto for the public.

The effect is a silent night sky, all the more silent for cave explorers without footsteps.

And there his skeletal remains were discovered last year by amateur cave explorers.

Soon they became very popular and today are commonly used by underwater cave explorers.

This is one reason the cave explorers believe the animal paintings belong to a second and later period.