It is one of the most spectacular and beautiful routes within one of the most well-known cavities in the Asón Valley, an enclave of internationally recognized prestige, being able to carry out this type of route inside a cavity with the help of a guide. professional and with the only lighting on our fronts, is to approach the world of caving without altering the environment and respecting the conservation of these underground paradises, helping the dissemination and sustainability of the resources of these natural spaces.