Roopkund (nonfiction)

Roopkund (locally known as Mystery Lake, Skeletons Lake) is a high altitude glacial lake in the Uttarakhand state of India. It lies in the lap of Trishul massif. Located in the Himalayas, the area around the lake is uninhabited, and is roughly at an altitude of 16,470 feet (5,020 m),[1] surrounded by rock-strewn glaciers and snow-clad mountains. Roopkund is a popular trekking destination.

With a depth of about two metres, Roopokund is widely known for the hundreds of ancient human skeletons found at the edge of the lake. The human skeletal remains are visible at its bottom when the snow melts. Research generally points to a semi-legendary event where a group of people were killed in a sudden, violent hailstorm in the 9th century.[4] Because of the human remains, the lake has been called Skeleton Lake in recent times.

https://www.theatlantic.com/science/archive/2019/08/roopkund-skeleton-lake/596416/

https://boingboing.net/2019/08/21/mystery-deepens-dead-of-skele.html