Lake Pavin — the cursed volcanic lake of Auvergne, France

Lake Pavin, situated near the mountain town of Besse in the Auvergne region of central France, is a nearly perfectly circular crater lake formed approximately 6,900 years ago by the last volcanic eruption in mainland France. The lake, unusually deep at 92 metres for its 750-metre diameter, has been associated with hauntings and dark legends for centuries. Local tradition holds that the lake is cursed — a village or town once stood at the site and was swallowed when the volcanic crater collapsed, taking all its inhabitants to their deaths. Visitors to the lake report hearing voices rising from the water, particularly at dusk, and seeing lights beneath the surface. The lake's waters are unusually dark and still, creating a mirror effect that local folklore attributes to a supernatural source. Fishermen have historically avoided the lake, and the surrounding area has been considered spiritually dangerous. Modern science has revealed that Lake Pavin is meromitic — its deep waters never mix with the surface layer, creating an anoxic zone that preserves organic matter indefinitely. Some researchers have speculated that gas releases from the deep layer could create unusual visual and auditory effects, potentially explaining some of the supernatural reports.