Roopkund is better off known as “The skeleton lake” due to the presence of an enormous grave that holds about 300 to 600 skeletons. This discovery has revolutionized the world of ancient history ever since 1942, when a park ranger came across this mass deposition of bones. It probably is an in-accessible frozen lake that requires about four day travel to reach from the nearest locality. Recently, it has become an important spot for the visitors as they learn and conjecture this advent of science.
Through carbon dating tests, it has been experimentally estimated that these skeletons belong to anytime between 12th and 15th century. It is primarily believed that the deaths were caused by some kind of natural disaster like a blizzard, landslide or any bacterial disease. However, this topic still remains controversial among the residents, anthropologists and paleontologists of modern times.
Some went ahead to mystify the deaths with fictional possibilities and creating folklores out of it. Others suggested multiple causalities of the skeletons being those of wandering Tibetan traders who had lost their way, royal pilgrims, people committing ritualistic suicides, vanquished army etc.
More recently in 2004, a team of European and Indian scientists sent by The National Geographic Channel visited Roopkund to carry on with the probe. Their research has unearthed interesting hints and information. Part of their findings includes anthropological treasures like well-preserved corpses, jewelry, bones and skulls belonging to the dead. Read complete story at http://theunexplainedmysteries.com/roopkund-skeleton-lake.html