La Vallée Perdue Escalada en roca 18 vías en acantilado

The climbing area is maintained by "Parc d'Escalade et de Randonnée de la Montagne D'Argent" (PERMA) -- primarily a climber's organisation. Daily access fee was $14 as of summer 2021, and yearly memberships ($70 as of 2021). Being affiliated with the Alpine Club of Canada, members of certain sections may climb for free upon presentation of their club membership but are still required to pay for on-site camping.

On weekends, there is generally someone there to collect the fees, during the week this is more often done on the honour system.

The site is open all year round with artificial ice falls created over the cliffs over the freezing winter months for Technical Ice Climbing.

A complete guidebook (including hand drawn reproductions, contributed by a local artist) is generally available at the hut on weekends. It has maps for access to the cliffs, and drawings of all the cliffs with routes marked on them. The current official guidebook is fully bilingual.