Tracking bags are mainly needed when you are traveling to Mountains and himalayans. The Himalayas are bordered on the north by the Tibetan Plateau, on the south by the Indo-Gangetic Plain, on the northwest by the Karakoram and Hindu Kush ranges and on the east by the Indian states of Sikkim, the Darjeeling district of West Bengal, Assam, Arunachal Pradesh and Manipur. The Hindu Kush, Karakoram and Himalayas together form the "Hindu Kush Himalayan Region" (HKH). The western anchor of the Himalayas, Nanga Parbat, lies just south of the northernmost bend of the Indus River; the eastern anchor, Namcha Barwa, is just west of the great bend of the Yarlung Tsangpo River. The Himalayas span five countries: Nepal, India, Bhutan, China (Tibet), and Pakistan. The first three countries having sovereignty over most of the range.