The Formation

Sub-horizontal conduits

If the tickets available online are sold out, it is still possible to buy them at the Ticket Office of the Caves. Admission is guaranteed.
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ATTENTION! Tickets ARE NOT REFUNDABLE, in case of non-use or arrival after the time written on the ticket. It will therefore be necessary to pay another ticket for a subsequent tour.
Access to dogs is allowed only with a pet carrier, not on a leash. For large dogs, 3 concrete dog boxes with a lockable front grille with padlock are available at the ticket office parking lot.
Located in a safe and shady place, they are not guarded. The visitor can use the pit space for a limited period of time for the visit to the cave, it cannot be booked and availability is requested once they arrive on site.

They have a medium inclination esteemed in 3 grades and present ,on its sides, deep etchings which, besides indicating the quantity of water that crossed them, reveal the solvent power of water on limestone. Sulphureous water penetrated in the paleo-rooms and , through the sub-horizontal conduits, entered the outside hydrography. These conduits are very important because allow the exchange of sulphureous water and a continuous reaction.