Kalpokhri is a scared lake located at an elevation of 3170 meters. It is found enroute to the famous Sandakphu peak of Singalila Range from Gairibas. The local people believe it to be the home of the formidable Kalnaag or the huge slithering black snake. Pokhri in the local language means lake and Kaal is derived from Kaalnaag and hence Kalpokhri. The Kalpokhri contains black water and is a rare presence at such an elevation. During spring the region surrounding the black lake is full of the magnificent rhododendron and orchids. The lake doesn’t freeze even during winter because the water is muddy.