Gruta da Lapa is an 850m long cave formed by an underground river. You can see impressive stalagmites and stalactites. Can only be visited with a guide. If you do not have a flashlight with you (necessary because it is pitch dark in the cave), the guide can give you one.
The Gruta da Lapa is part of a 42 km long system of caves. Currently, only 850 meters of this paradise is open to visitors. A visit begins with a steep descent along a path and stairs. The route in the cave begins with a descent of 70 meters. Access is only allowed with a local guide. It is forbidden to enter the caves with sandals or slippers. Closed shoes are mandatory.