Sujoy Das has been trekking and photographing in the Himalayas for the last thirty years. Notable treks include: Winter ascent of Kala Pattar peak (Everest region) Dec 2003; Everest Base Camp 18,500 feet (2001); Thorung-la pass/Annapurna Circuit 17,746 feet (2000); Annapurna Base Camp 14,300 feet (1999); Gokyo Ri peak 18,275 feet (1998); Rupkund Lake, Garhwal 16,200 feet (1996); Kangchendzonga Base Camp North and Green Lakes 16,875 feet (1987); Dorji La peak North Sikkim 18,644 feet (1986); crossing of Lhonak-la pass North Sikkim (1987). In September 2009, he crossed seven passes from Wanla to Padum in Zanskar (Ladakh). He is the joint author of Sikkim- A Travellers Guide and his essays and photographs have been published in books and magazines worldwide.He is currently working on a book on the Indian Himalaya and organizing treks and photo expeditions as a part of South Col Expeditions. He lead a trek in December 2009 for ten persons to Ghandrung-Ghorepani in the Annapurna region. He lives at 8 Short Street, Kolkata 700017, India. sujoyrdas@gmail.com