The best season to climb in Sikkim is from May to October. Foreign expeditions have to book a peak along with a peak fee. It is mandatory for Expeditions in Sikkim to take a liaison officer from the Sikkim Mountaineering Association along with the liason officer from the Indian Mountaineering Foundation. IMF functions as a clearing house for foreign expeditions and deputes a liaison officer to accompany foreign climbers. All requests have to be forwarded to IMF for clearance.

It is advisable to give at least a six month's notice before embarking on an expedition.Rescue operations during emergencies and accidents are looked after by the liaison officer and have to be fully insured by Clients for rescue, evacuation and all costs pertaining to the Rescue.
Siniolchu Travels will only facilitate rescue operations , but all costs have to be borne by clients or paid up by Insurance Co. Siniolchu Travels Sikkim is free from all liabilities & claims arising for any calamities  and all activities conducted by Siniolchu Travels is on Free Will and undertaking of clients.

Mt. Thingchinkhang (6010 Mts) and Mt. Jopunu (5603 Mts) are situated in western Sikkim and falls under Khangchendzonga National Park which is window to natural beauties, bio- diversity, sacred lakes and snow capped mountains. One can see this peak from Okhlathang Valley while trekking to Gochala (pass ). These two peaks have been declared by Sikkim Govt. as trekking peaks in 1990. Since then it had caught the eyes of many mountaineers, but it has only been appreciated much then climbed.

These mountain can prove just more than a trekking peak for many mountain climbers. From the summit of these peaks one can enjoy a breath taking view of some of the most beautiful mountains of Sikkim Himalayas. Mt. Pandim (6691 mts) on the right stands to the towering heights just in the same range where these trekking peaks rises.

Just across Okhlathang Valley one can see peaks like Goechala , Rathong, Kabru sisters, Siniolchu and the mighty Khangchendzonga. Mt. Makalu in Nepal is also seen from here.

A beautifully Matthorn looking peak in near Rathong glacier lies in the vicinity of the Kabru sister of peaks, Rathong and Kokthang West Sikkim . This peak is best-approached traversing Frey glacier. The is mostly rocky with snow in its gaps. This peak is named after famous mountaineer George Frey who in an attempt to climb this peak with Tenzing Norgey fell and died. George Frey with confidence did not listen to the advise of Tenzing Norgey to put on his crampons. His Ice axe and crampons are still lying at the base of Frey Peak as him memorial.