Tourism is one of an economic contributor to the union territory of Ladakh in Northern India. The union territory is sandwiched between the Karakoram mountain range to the north and the Himalayas to the south and is situated at the height of 11,400 ft. Ladakh is composed of the Leh and Kargil districts. The region contains prominent Buddhist sites and has an ecotourism industry. Transport The two roads into the area from outside are the Zoji-La Pass and Kargil route from Srinagar District in the Kashmir Valley, and the high altitude Manali-Leh Highway from Himachal Pradesh. The Manali-Leh road is open only from May or June to October or November when snow is cleared from several passes. The Srinagar-Leh road is open from April or May to November or December and is generally blocked by snow through the winter only at Zoji La Pass. Kushok Bakula Rimpochee Airport at Leh has flights from Delhi year-round on Indigo, Vistara, GoFirst, and Air India. Air India also operates weekly flights to Jammu and Srinagar. Roads within Ladakh, except to Zangskar, are open all year round. Khardong-La Pass to Nubra can get closed by snow for several days in winter and spring. Chang-La pass to Pangong Lake rarely closes. Buses serve the whole area from Leh and Kargil towns. Taxis are available in Leh and Kargil as well as in block headquarters like Tangtse, Diskit, and Khalsa. Shared taxis to Nubra, Kargil, Srinagar, and Zanskar leave Leh in the early morning. The nearest railhead is Udhampur connected with all major cities and towns in India. Permits and borders No special permit is required to visit most of Ladakh, including Leh and Kargil towns. Permits are required for all tourists to visit the "Inner Line" areas, i.e. Nubra Valley; Panggong Lake and the Durbuk Block that it lies in (i.e. north of the Changla Pass); Tso-Moriri and Tsokar Lakes and the area along the Indus River east of Upshi; and Dha-hanu and the area along the Indus River northwest of Khalatse. Permits are not available for foreigners to go to the far reaches of each of the areas close to the borders (or Line of Control, etc.) with Pakistan and China. For example, foreigners can go to the edge of Panggong Lake and Maan and Merak villages, but not along the edge of it to Phobrang or Chushul villages; they cannot proceed east up