Gruta do Janelão: the signature cave day
Published return walk: 4.8 km, about 5 hours 30 minutes; ICMBio rates it semi-strenuous. Make this the day’s main commitment. On the way, notice the changing scale: a painted surface asks you to look closely, while a roof opening pulls your attention upward. Pause only where your guide indicates it is safe, and allow the group to stay together rather than separating into photographers and fast walkers.







