The Tresviso Caves Project is currently exploring in the permit region 19 assigned to A.D.KAMI. A.D.KAMI is a Madrid based club that forms part of the the wider project.
The zone itself is the most western end of the Cantabria region, along the border with Asturias.
Historically, exploration in the region has included areas outside of this current permissable region (i.e. Invernales de Caballar, Bejes, Oceno etc.).
Information on expeditions and discoveries in these areas are included for completeness but do not form part of the current exploration.