Also called Spoulga d'Onnolac La Cave de Bethlehem located a few minutes (1.1km) from the Ariège Evasion campsite has aroused for centuries craze and curiosity. It is not one day without that at the reception of the campsite a person presenting himself, often coming from the four corners of the world to ask us to indicate to him the cave of Béthlem, with research sometimes with a geological curiosity and other times of a real spiritual quest. Les historical stories allow us to attest to its fortification in the 13th and 13th centuries, it would have served as a refuge for the Cathars, after the fall of Montségur. It is a double entry cave, made up of a corridor measuring 50 m long. It is a fortified cave, hence the Spoulga appellation (in the old toponym of the Southwest to designate a military cave): the two ends are barred by walls.
Many myths and other legends surround this place, what is certain is that his visit will not leave you indifferent and that you will feel the spiritual charge of the place and of all the generations which have succeeded it.
Grotte access plan from the campsite:

Useful links:
The Cathar history of the cave by "Cathar land"