Sikkim Tour from Nepal Sikkim, the small but beautiful kingdom is situated in the eastern Himalayas. Sikkim is termed as the Switzerland of the east, a heavenly paradise on earth. It covers an area of 2818 square miles 7325 square kilometers. It is rectangular in shape with seventy miles in the north to south and forty east to west. Geographically it is 28 Degree 07' 48'' degree and 27 degree 04' 46'' north latitude, and 88 degree 00' 58' and 88 degree 55' 25'' east longitude. In the north it is bounded by Tibetan plateau to its east is Bhutan and Chumbi valley of Tibet and in the southern side is bounded by West Bengal India. There are two passes in the eastern boundary with Tibet Nathula pass (4700 metres) and Jelepla(4016 metres ). To the west lies Singalila range which forms the most important boundaries between Nepal and Sikkim with a pass named Chiwabhangjang (3400 metres). There are two important rivers In Sikkim Teesta which starts from Tashidrag Glacier in the north and Rangit which is a tributaries of Teesta river.