A submerged island that could be the source of the Atlantis myth was hit by a large earthquake and tsunami 12,000 years ago, a geologist has discovered.
Spartel Island now lies 60m under the sea in the Straits of Gibraltar, but some think it once lay above water.
The finding adds weight to a hypothesis that the island could have inspired the legend recounted by the philosopher Plato more than 2,000 years ago.
Evidence comes from a seafloor survey published in the journal Geology.
Marc-André Gutscher of the University of Western Brittany in Plouzané, France, found a coarse-grained sedimentary deposit that is 50-120cm thick and could have been left behind after a tsunami.