The valley of Gangtey is one of the most beautiful spots in Bhutan. The surprise of finding such a wide, flat valley without any trees after the hard climb through dense forests is augmented by
an impression of vast space, and extremely rare experience in Bhutan where most of the valley's are tightly enclosed.
A few kilometers beyond the Gangtey Monastery, on the valley floor lies the village of Phobjikha. This place is the winter home of black necked cranes that migrate from the arid plains in the north to pass winter in milder and lower climate. Phobjikha, at an altitude of 2900 m, falls under the district of Wangduephodrang and lies on the periphery of the Black Mountain National Park. The valley boasts two beautiful meandering rivers, Nakay Chhu (Chhu Naap-black water) and Gay Chhu (Chhu Karp-white water).
According to a local legend, the two rivers actually represent a snake and a boar. The two animals once raced each other with an agreement that if the snake (Nakay Chhu) won, Phobjikha valley would be able to grow rice, but if the boar won, then rice could never be cultivated in the area. The snake lost since it had to meander all the way during its journey. Rice cannot be cultivated in the valley even today.