Another puzzling technology that proves the superior skill of the Atlanteans was the “orichalcum” that Plato mentions as covering the walls of Atlantis (Santos). Orichalcum means to brass or use an alloy copper and zinc that is like gold. They probably got it from Atlantis, where else? (Santos). According to Plato’s account in Timaeus, the ocean where Atlantis used to be was nearly impassable by boat due to mud and debris from the island (Hodge).