Devil's Lair is a single-chamber cave with a floor area of around 200 square metres that formed in a Quaternary dune limestone of the Leeuwin–Naturaliste Ridge, 5 kilometres from the modern coastline of Western Australia. The stratigraphic sequence in the cavefloor deposit consists of 660 centimeters of sandy sediments, with more than 100 distinct layers, intercalated with flowstone and other indurated deposits. Excavations have been made in several areas of the cave floor. Since 1973, excavations have been concentrated in the middle (approximately on a north-west, south-east axis) of the cave, where 10 trenches have been dug. Archaeological evidence for intermittent human occupation extends down to layer 30 (about 350 cm), with hearths, bone, and stone artifacts found throughout.
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