Mountaineering in Sikkim has been introduced very recently. Government of Sikkim opened few alpine peaks for climbing as a new step to promote quality adventure tourism in Sikkim. Mountaineering season in Sikkim starts from April to June, and September to November, when daytime temperature at most altitude are quite comfortable. Above 4000m in the morning and evening the temperature will be considerably lower and can drop to around -20 degree Celsius. Usually day time temperatures are pleasant but nights are very cold above 5000m. Temperature are milder in spring but there can be more snow around. Mid April, June through last week of September, to first week of December, is the safest and the best time for climbing and mountaineering as well as for trekking in Sikkim.
Sikkim shares a mountainous border with Nepal in the west, with China in the north and the east. All the early (pre-war) expeditions passed through Sikkim to cross overto Tibet on their way to attempt Everest. Francis Younghusband’s famous mission of 1904 to Tibet also passed through Sikkim.
Doug Freshfield was one of the early mountaineers to visit this area. His book “Round Khangchendzonga” is a classic record of all the areas in North Sikkim. In West Sikkim, peaks like Kabru (7338m) were climbed in 1935 by C.R. Cook. Others like Kokthang and Rathong were climber much later. Even now some peaks have not been climbed from Sikkim side, though ascents have been made from Nepal. Northern Sikkim consists of Zemu glacier and valleys from which rises the third highest mountain of the world – Khangchendzonga. Pual Baur and his German team repeatedly attempted to climb it via its eastern approaches before the Second World War. Ultimately the Indian Army Team made subsequent repeat ascents. There are many peaks around Khanchendzonga like Simvo and Siniolchu, which are tempting and an open invitation to climbers.
Altitude of Tenzing Khang is 6010 meters and is closed to Jophnu and is one of the most famous climbing Peak in west Sikkim. As usual this trek follows the whole route of Famous Dzongri- Goechela Trek including Tshoka. The peak seems easier to climb from down but technically it is harder especially during Snow. It is situated in western Sikkim and falls under Kanchenjunga National Park which is window to natural beauties, bio- diversity, sacred lakes and snow capped mountains. One can see this peak from Okh la thang Valley while trekking to Goecha La (pass). Tenzing Khang has been declared by Sikkim Govt. as trekking peaks in 1990.