The Caldeira of Faial is a very special natural reserve since 1972 (category I – IUCN). It’s a volcanic colapse crater with unique characteristics. The Caldeira of Faial descent is an unique experience, so the Faial Natural Park controls the access to the bottom, issuing the required permits. The maximum allowed number of descents per day is 3 groups and only with a Certified Guide. The Caldeira of Faial is one of the last strongholds for the Azores native forest. We can find there more than 60% of the Azores endemic species. It’s a place where you can feel how the Azores looked like before human presence. The trail is difficult because is very narrow and steep. Sometimes some scramble is necessary. It’s also frequent to find mud and a flooded area at the bottom since the Caldeira is a humid habitat.