PANKANG TENG TSO ( PT TSO) : There are number of beautiful lakes around Tawang. Among them Pankang Teng Tso, a  natural lake that forms when the snow melts in summer, located 17 km away from Tawang is the most beautiful. It looks like a blue lapis ‘lazuli’ on a clear day and it’s surrounded by flowers of all colours in the month of October and blooms with snow in the winter. The beautiful natural  sites surrounding the lake  provide tourist a lucky chance for deep communion with nature.