In Urbasa there are numerous chasms and cervices which make it an ideal destination for potholing enthusiasts. |
Archaeologists came to look at the site giving their opinion of what they thought the rock surface cervices to be along with that of our Spiritual Elder. |
In the high valleys in Sobrarbe, this process was carried out by the subterranean water flow through the network of cervices in the Hercynian massif. |