Cave known for a large solitary stalactite hanging in the middle of the vault which, seen from the sea, vaguely recalls the shape of a hanged man – hence its popular name ‘dell’Impiso’ or ‘dell’impiccato’ (of the hanged man). It lies just before the Fossellone Cave, along the same trail, and is particularly striking when seen on a boat or canoe trip along the southern coast of the promontory.
In the Quarto Caldo area there is a prehistoric cave with a unique shape: the so-called Grotta “dell’Impiso” or “dell’Impiccato”. More than a cave, it is a cavity jutting out over the sea, practically suspended in mid-air because its base collapsed completely through sea erosion during the post-glacial period. Its unusual name comes from a stalactite hanging from the middle of the vault, which looks like a hanging man. It is largely invaded by the sea and preserves bone breccias only on its side walls. The far end of the cave can also be seen from a rough path on land that reaches the western wall.