Bhutan is a small, landlocked country located in southern Asia between Tibet and India. The topography of the country can be divided into different regions from north to south based on altitude: the Great Himalaya, the Inner Himalayans and the Southern Foothills.
The Great Himalayas are a mountain range that stretches from Mt. Chomolhari (7,314m) in the west to Kulha Gangri (7,554m) near the centre of the northern border between Tibet and Bhutan. Due to the elevation of the highest summits, 20% of the area is covered perpetually by snow. The Inner Himalayans are the largest geographical region in Bhutan. They are characterised by broad valleys and forested hillsides and the majority of major towns in Bhutan including Paro, Thimphu and Punakha are located here. The Southern Foothills (also known as the Himalayan Foothills) are located in the southern part of the country. The average rainfall here is quite high reaching up to 200 inches. As a result of this rain, the Southern Foothills are known for lush vegetation and tropical forests. These forests are full of diverse wildlife and days here can get very hot. Rivers are also very important to Bhutan’s geography because they are a source of hydroelectric power. Due to the monsoon season that the country experiences, rivers and valleys here are wider than in Nepal and India.