Tuiwa is a village located in Daglung（Chinese：-{打隆镇}-） Town, Nagarzê County, Shannan, Tibet, China by Lake Puma Yumco.
The village is located at an elevation of 5,070 meters above sea level, and is the often referred to as the "rooftop of the world". It is the second highest village by elevation in the world.
References
Tuiwa Wikipedia(Text) CC BY-SA