Nepal is a landlocked country between India in the south, east and west and Tibetan Autonomous Region of China on the North, 550 mile/880km long and 150miles/240km wide . The country is rectangular in shape stretching from east to west. Her 56826 sq. Miles/148000. Km. is devided lengthwise into three strips. the northernmost strips the Himalaya, meaning "abode of snow ".It includes eight of ten highest mountain peaks in the world. The southernmost region, which is the narrowest of the three strips, is called the Terai. It is an extension of the Gangetic plain of northern India, a jungle with elephants, rhinoceroses and tigers. Between the two outer strips lies an interface region of mountains, hills and valleys. 

Nepal lies between 80 degree 4' and 88 degree 12' East longitude and 26 degree 22' and 30 degree 27' North latitude is bounded on the North by the Tibet Autonomous Region of China, the East-South and West by India. The length of the Kingdom is 885 kilometers east-west, and it's breadth varies from 145 to 241 kilometers north-south. The country can be devided into three main geographical regions: 

• Himalayan Region: The altitude of this region ranges between 4877m - 8848m. It includes 8 of the 14 highest summits in the world which exceed altitude of 8000 meters including, Annapurna, Dhaulagiri and others. 
• Mountain Region: This region accounts for about 64 percent of total land area. It is formed by the Mahabharat range that soars upto 4877 meter and lower Churia range. The land then drops to the "Midlands valleys", typified by the Kathmandu Valley at a height of around 1300 meters. These Midland valleys extend across most of Nepal and are followed by lengths of some of the great rivers - the Seti, Karnali, Bheri, Kali Gandaki, Sun Kosi and Tamur. Most of the population used to live in these valleys and historically these were the cultural heartlands of Nepal. 
• Terai Region: The low-land Terai occupies about 17 percent of the total land area of the country. This used to be a mosquito-ridden wilderness and a natural boundary zone, but malaria control programs since 1950's have seen massive forest clearance and population settlement in this zone. This is the development zone of Nepal. 

The Himalayas are young, active and still growing in height by up to 1 cm a year. The Himalaya is also an earthquake zone and hot springs may be found on the upper reaches of many rivers where the valley cuts through the river gorges; rock stata, faults and synclines clearly exposed in the water-carved cliffs. 

The Himalayas were pushed up after the river systems had established themselves - this explains the strange way that many of the main rivers have headwaters on the North (wrong) side of the Himalaya. The rivers maintained their courses, established a system of antecedent drainage and eroded deeper and deeper gorges as the mountain kept growing: the upper valleys of the Arun and Kali Gandaki are some of the deepest land gorges on Earth.