Located at a short distance from the village of Fontane, the Bossea Cave begins with a narrow and winding tunnel which, after a hundred meters, flows as if by magic into an enormous environment characterized by the noise of an underground river. A long series of steps gradually rises to other even larger areas where the dripping has formed stalactites, stalagmites, and columns. The calcareous concretions reach their maximum size in a colossal hall of 150 meters long, at least 50 meters high, and 60 meters wide, in which you can admire a gigantic stalagmite on the left, which is more than ten meters high and tilted by 45° because of a collapse of the floor – The Missile –, a stalagmite tower that looks like a hill – the Sella Fortified Tower –, and an imposing “mammellonare” flow on the right of at least 25 meters high – The Buddha –. The path goes up to a beautiful waterfall which, from a canyon reachable by an aerial walkway, falls into the intense green of the underlying Lake Ernestina. On the way back, you can lightly touch the top of the Sella Fortified Tower and then go down again along a very scenic trail which, following a different path from that of the in-going journey, offers visitors new underground landscapes. The cave’s hydrology and meteorology are monitored by a modern science station.