SIKKIM: has a very rough topography due to which there are very less flat lands in Sikkim. The rivers and mountains are the main physical features that define the boundaries of the state of Sikkim with its neighboring countries. Besides the rivers and mountains, the glaciers, mountain passes, lakes, hot springs and waterfalls are also found in this region. The Kanchenjunga mountain, one of the highest mountain peak in the world is also situated in Sikkim. The Yumthang hot springs are the famous hot springs located in Sikkim. These hot springs are rich in Sulphur content and have high medicinal value. Gurudogmar, Cholamu, Changu, Bidang Cho, Menmecho, Kechopari are some of the lakes which are also found in Sikkim.