Biafo & Hispar Glaciers have a total length of 126 kms and are longest out side the Polar Regions. They meet at the 5150 meters Hispar Pass. This immense high way of ice and stones connects the antique kingdoms of Nagar in the west and Askoli (little Tibet) in east. This route was extensively used to connect the Silk Route with the Indian Sub-continent, China and Tibet.  Mr. H. W. Tilman an English trekker claimed in 1937 that he had seen the footprints of Yeti on the glacier. Glaciologists after conducting tests on the snow lake confirmed that the thickness of snow is one mile. Here one can observe the rare species of animals in abundance like snow Leopards, Himalayan Bears, Ibex, Markhore, and some times the Marco polo Sheep. The name Snow Lake was given by Martin Conway in 1892, who has given dramatic account of this place in his book ‘Climbing expeditions in Karakoram – Himalayas’. Eric Shipton in 1937 had estimated the present size of Snow Lake which is 77 sq. km. Snow Lake is situated between two Glaciers the Biafo and Hisper Glacier.