brazil is home to a variety of caves throughout its territory, with a few remarkable ones in the state of rio de janeiro. the brazilian society of speleology, a non-government organization has classified over two thousand caves in brazil, as published on this page.

furthermore, a variety of groups are now forming to study and preserve these ecological treasures with more enthusiasm than ever before. 

caverna bernardo de oliveira is part of the tijuca forest cave trail - the trail begins at restaurante a floresta, located inside the park. it is a not very demanding hike and the real action starts inside the cave.