Continuing the path along the vertical wall of Monte Gamspitz you reach a detour to the right that leads to the entrance to one of the cavities that go to make up the karst system of the Timau Caves. This system develops on several levels in rocky masses made up of limestone rocks that have undergone karst dissolution by the infiltration of waters that are particularly aggressive because they are rich in CO₂ and which flow both on the surface and at depth, giving rise to tunnels, pot-holes and sinkholes. Although partly equipped for visits, only the initial sections, which also show evident signs of work for defensive purposes, can be walked independently with a torch. For the remainder you must be accompanied by speleologists or expert guides.