'An unknown metal said to have been used in the sunken city of Atlantis has been found on 2,600-year-old shipwreck near the coast of Sicily. The 39 ingots of ‘orichalcum’ - described by Plato in his writings about Atlantis - are utterly unique. 'Nothing similar has ever been found,' an expert said. Plato described Atlantis as glittering ‘with the red light of orichalcum’, and he claimed that it was mined there, and used to build huge, glinting temples to the sea god Poseidon.'