The Annapurna Circuit trek is called the most diverse trek in the world. The complete circuit of the Annapurna massive is an estimated 300km that begins from lush subtropical forests at below 800m in altitude. The scene changes everyday from rice paddies to pine forests to Tibet like country on the northern slopes of the Himalaya in the district of Manang. Manang was only opened to trekkers in 1977, although a few mountaineering expeditions and scientific arties had visited this region in the 1950s.
After Manang the terrain turns to high altitude desert over the Thorung la pass at 5416m, down to Muktinath, Jomsom until the forested areas below Tukuche. The Kali Gandaki River on the other side of the Thorung La is considered the deepest ravine in the World, 5 times deeper than the Grand Canyon. The Kali Gandaki River cuts deeply between Mt. Dhaulagiri 8167m to the west and Mt Annapurna 8091m to the east. www.responsibleadventures.comwww.notjusttreks.com