Another of the well known caves in the Lot region of France. The source emerges at the side of the road in a man made structure, in the base of this you find the natural entrance to the cave system. The entrance offers great photo opportunities and even in the first 50m of the cave there are some really nice formations. It can be quite milky in the water but generally visibility is pretty good.

Depending on the amount of particulate, use of strobe vs. video lights you can get a lot of variation in scatter and lighting colours dispersed in the water.