Mysterious Desert Lake Looks Harmless, but Stay Far Away

If you don't have sea or ocean nearby, a lake is a great option on a hot sunny day. But not every lake is equally safe to swim in. There's a mysterious lake in the middle of a desert and the origin of its formation isn't clear at all. One minute there was nothing but piles of sand dunes, the next - a large body of tortoise water. It looks harmless and tempting but you'd better stay away from it...