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Nahuelito

CreaturesNahuel Huapi Lake, Río Negro, Argentina · Reported since the early 1900sUnconfirmed

In a deep, cold lake in Patagonia, people report a long creature with humps moving through the water.

What was reported

Nahuel Huapi is a large, deep glacial lake near Bariloche in Argentine Patagonia. Since the early 20th century, people have reported a large creature in it, usually described as having humps or a long neck. It is affectionately known as Nahuelito.

Sightings have continued over the decades, and photographs said to show it have appeared in local newspapers, though none is clear.

Explanations offered

Suggested explanations include waves and wind patterns on the lake, floating logs, large fish and swimming animals. No physical evidence has been found. Nahuelito has become a local mascot, like the Loch Ness Monster in Scotland.

When
Reported since the early 1900s
Where
Nahuel Huapi Lake, Río Negro, Argentina
Witnesses
Residents and visitors
Status
Unconfirmed

Famous cases are real, widely reported events. Each file sets out what witnesses said and the explanations that have been offered, without taking a side.