the instituto terra brasil in cooperation with the parque national da tijuca is promoting free, guided tours, every sunday with departure from the park at 9 am.

interested hikers can meet the guides ate the centro dos visitantes, located at estrada da cascatinha, 850, alto da boa vista. 

while caves are fascinating environments, they still remain some of the most dangerous spaces where to venture, in rio de janeiro like anywhere else.

narrow passages, wet and slippery slopes, darkness, lose rocks, protruding ceilings are just some of the obstacles faced while caving.