The visit is guided and has an approximate duration of 45 minutes. There is a máximum number of 20 people per sesión.
It is advisable to book by email or phone calling to (0034) 9220.127.116.11 and online purchases at least one day in advance, according to availability. The reserve must be formalized at the box office at least 10 minutes before the start of the visit in the visitor receptioncentre, located next to the parking of the cavity.
During the visit the use of comfortable footwear that does not slip and outerwear is recommended.