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The Paleolake Tehuelche is the name for several former lakes that existed in the area of Torres del Paine in southern Patagonia.[1] These were proglacial lakes that existed next to the Patagonian Ice Sheet during the Late Pleistocene and Early Holocene.[1][2] Some of the evidence of the lakes stem from lake terraces observable at present but these is some uncertainty on which terraces are associated to which lake or lake stage.[1]

About 38,000 years BP an early Paleolake Tehuelche existed and drained eastward through Turbio River. The surface of this lake was 250 to 280 m a.s.l.[1]

A particular lake named Great Tehuelche Paleolake covered what is now Sarmiento and Del Toro lakes plus a large area to east making Cazador Range a peninsula[2] until about 7,113 years BP when the lake drained and ceased to exist.[2]

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