A local urban myth is that the lake is bottomless and the crater of an extinct volcano . That notion is potentially based on its impressively disproportional high depth compared to its width ( 48.8 m depth and only 134m width ) or/and on locals noticing disturbances at the surface or also the level of the water during the 1956 Amorgos earthquake ( which was wrongly attributed to an eruption of Santorini ) . Because of the latter , many assume a possible geological relation of the two locations
1956 Amorgos earthquake
1956 Amorgos earthquake
Lake Voulismeni