This circuit is the most popular trek of the lower Dolpa mainly because of the Shey Phoksundo lake. The lake featured in the famous Documentary 'Caravan' is of great interest to visitors. The lake cuts the deepest gorge and owing to extreme geographical factors, no living beings, not even fish can survive in the lake. The route of Juphal-Dunai-Dho-Phoksundo-Dunai-Juphal is a 15 days long trek, passing through high Himalayan valley of Dho Tarap. If lucky, one can sight Snow Leopard and Musk deer.