Sikkim is the 22nd state of India that came into existence with effect from 26th April, 1975. Sikkim state being a part of inner mountain ranges of Himalayas, is hilly having varied elevation ranging from 300 to 8540 meters. days But the habitable areas are only up to the altitude of 2100 mtrs. Constituting only 20% of the total area of the state. Sikkim has been divided into four districts and each district has further been bifurcated into two sub-divisions for administrative purpose.
The highest portion of Sikkim lies in its north west direction. A large number of mountains having altitudes of about seven thousand meters stands here with - Kanchenjunga (8598 m.), The third highest peak in the world. The high serrated, snow capped spurs and peaks of Kanchenjunga look attractive consisting of Kumbha Karna (7711 m.), Pendem (6706 m.), Narsingh (5825 m.), Kabru Dome (6545 m.), etc. A number of glaciers descends from eastern slopes of Kanchenjunga into Sikkim where snow clad line is found above 5300 mtrs. The biggest of them is Zemu, from whose snout above Lachen monastery rises the river Teesta.