Located under the great white cliff called Bastionata di Boragni, the Strapatente cave is a natural gallery dating back to the Miocene period. Inside you are surrounded by numerous stalactites and stalagmites and also by completely formed columns. In the centre of the main hall you can see a stalagmite about one metre high. It is very suggestive to hear and see calcareous water dripping, but be careful not to touch the concretions as the residual fat in the human skin can disturb their growth. At the south exit you can enjoy a beautiful view of the green and wild Nava Valley.
Above the north entrance of the cave is the Dolmen della Strapatente, a megalithic structure dating back to the Bronze Age. The structure consists of a large horizontal slab of Pietra del Finale stone resting on five smaller stones. The horizontal surface has two communicating basins, probably cups for the collection of liquid for ritual purposes. It is not to be excluded that the dolmen could also be used as an astronomical observatory given its orientation on the meridian axis.
Crossing the whole cave (don't forget headlamp or torch) and coming out on the opposite side of the ridge and taking the path again you reach the suggestive Grotta dei Balconi, almost a natural arch marked by dry stone walls.