Nepal is a rectangular landlocked country lies between 800 4' and 800 12' east longitude and 260 22' and 300 4' north latitude with average 885 km east-west length and an average width of 193 km north-south. Its border touches the Tibetan Autonomous Region of China in the north and India in the east, south, and west. Nepal tentatively divided into 3 geographical regions east to west.
The Himalayan Region:- Altitude is 3,000 meters to 8,848 meters, 13 % of the total land area of the country, alpine or frigid climate, 8 of the world's 10 tallest mountains including Mount Everest and many more mountains and peak.
The Mountain Hill Region:- Altitude 600 meters to 3,000 meters, 64 % of the total land area of the country, mild and pleasant weather, subtropical river, valleys and subalpine forested hills including Kathmandu Valley also.
The Terai Region:- Altitude 60 meters to 600 meters, 17 % of the total land of the country, warm and humid climate hottest part, the most fertile plain land and dense forest areas with major Himalayas River like Saptakoshi River, Gandaki River, Karnali River.