Phoksundu Lake - Dolpa - Ablsolute Beauty:

Phoksundu lake is the deepest lake of Nepal. It is located at an elevation of 11,849 ft above sea level in the Dolpa District. The maximum length is 5.15 km and the maximum width is 800 m.The maximum depth of the lake has been recorded up to 476 ft in 2004.
There are lots of stupas where lots of people come to visit every year.
It has been designated to Ramsar site in september 2007.

I have visited the place twice. The place is absolute beauty and you must try it once. You can lose your mental pressure by visiting the place. This is also amazing place to spend during vacation.