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Difficult travel containing a route through a beautiful area and the exploration of a difficult cave and of a succesion of 22 and 8 m wells and a large variety of geological formations generated by a small subterranean river. The route is made out of fossil formations or newly materialized areas that form a very beautiful structure, also the group will follow the subterranean river for 0.5 km (it is very spectacular in winter). |
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