The Cosquer cave is located in the Calanque de Morgiou in Marseille, France, near Cap Morgiou. The entrance to the cave is located 37 m underwater, due to the Holocene sea level rise. The cave contains various prehistoric rock art engravings. It was discovered in 1985 by and named after diver Henri Cosquer, but its existence was not made public until 1991, when three divers became lost in the cave and died.
The cave can now be accessed by divers through a 175 m long tunnel, the entrance of which is located 37 m below sea level, that had risen after the cave was inhabited. During the glacial periods of the Pleistocene, the shore of the Mediterranean sea was situated several kilometers to the South and the sea level up to 100 m below the cave entry.
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