Additionally, the northwest shore of the lake is the site of an isolated house sometimes alleged to have been occupied by Nazi dictator Adolf Hitler following his purported escape from Berlin in April 1945.

A curious fact about the lake is that, despite being nowhere near any ocean and being at high altitude, it is also home for kelp gull and the blue eyed cormorant (Phalacrocorax atriceps), otherwise strictly marine birds.

[citation needed] The neighboring lake Lago Lácar, has also been the site for accounts of another creature, more consistent with a plesiosaur, with aborigines describing it as a sea-cow with teeth all around it.

[citation needed] Members of the Buenos Aires Zoo visited the lake in 1922 trying to corroborate the reports of sightings of the prehistoric animal, but found no evidence to support the theory of such a creature.

Hitler and Braun allegedly resided at the Inalco House, located at the northwest end of the lake,[12] in part due to the estate's remoteness and lack of accessibility.

The plan includes unusual design features such as bedrooms connected by bathrooms (and closets), similar to Hitler's Berghof residence in Bavaria.

The residence was later sold to businessman Jorge Antonio, the representative of German automaker Mercedes-Benz in Argentina and a close associate of Argentine president Juan Perón.

[12] Hitler then moved to a Bavarian-style mansion at Inalco where he remained until Peron was overthrown in a military coup in 1955 when he fled to an even more remote chalet to avoid detection when the new government in Buenos Aires began looking for Nazi war criminals alleged to be hiding in Argentina.

[20] Additionally, the Hunting Hitler team cited the proximity of German scientist Ronald Richter's Perón-backed nuclear fusion project on Huemul Island.