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Hanle (also spelt Anle) is a large historic village in the Indian union territory of Ladakh. The revenue village of Hanle comprises six hamlets — Bhok, Dhado, Punguk, Khuldo, Naga and Tibetan Refugee habitation —within 1073 sq km Changthang Wildlife Sanctuary in Changthang plateau. It is the site of the 17th century Hanle Monastery (gompa) of the Drukpa Kagyu branch of Tibetan Buddhism. Hanle is located in the Hanle River valley on an old branch of the ancient Ladakh–Tibet trade route. Hanle is the home of Hanle observatory (ISO - Indian Astronomical Observatory), the tenth (see List of highest astronomical observatories) highest optical telescope in the world in India's first dark-sky preserve.
Hanle is in the valley of the Hanle River, which originates near the Imis La pass [5.290m or 17,355ft high saddle, south of Ukdungle Indian Military base, Zarsar & Tradole peak] on the India-Tibet border and joins the Indus river near Nowi and Loma north of Hanle village, close to the town of Nyoma. A road running through the Hanle valley from Loma is the quickest way to reach Hanle from Chushul and Pangong Tso side. In 2012, the road terminated near Hanle (see "Transport" section for new road connectivity), the traditional trade and pilgrimage corridor formerly ran up the Hanle valley to Imis La, crossed into the Indus valley via Charding La near Demchok and Dêmqog, and proceeded to Tashigang in Tibet. This traditional trade route to Tibet is now closed.
The valley is home to approximately two thousand people, of whom about 300 people are living in Hanle village.
Hanle is mentioned by name in the settlement document of the kingdom of Maryul in c. 930 AD, as forming one of its frontiers: "Wam-le (Hanle), to the top of the pass of the Yi-mig rock (Imis pass)". To the west of this frontier were the highlands of Rupshu and, beyond it, Zanskar.
Sengge Namgyal (r. 1616–1642) built the prominent Hanle monastery in association with Tatsang Repa (Stag-tsang-ras-pa), the notable Buddhist priest of the Drukpa ("red hat") sect. Sengge Namgyal died here in 1642 after his return from an expedition against the Mongols who had occupied the Tibetan province of Tsang and were threatening Ladakh's possessions in Tibet.
India set up the Himalayan Chandra Telescope, a 2m gamma ray telescope at Hanle. The Major Atmospheric Cerenkov Experiment Telescope (MACE), which is under construction in Hanle, will be the world's highest Cerenkov telescope and the second largest Cerenkov telescope in the world. It was originally scheduled to become operational by 2016, but plans were pushed back to begin operations in 2020.
Hanle is an important area for wild animals. It harbours the only population of the Tibetan gazelle in Ladakh.  The wetlands in the Hanle basin teem with migratory birds including Bar-headed Goose and the Black-necked Crane. One can easily see scores of Tibetan wild ass grazing on the sedge-meadows along the Hanle River.
Nyoma Air Base in northwest and Fukche Air Base in east are 74 km & 24 km away respectively, and Ukdungle town is in South. Hanle is important stopover from mainland India to Ukdungle, Chumar sector and Demchok sector.
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- Bhattacharji, Romesh (2012), Ladakh: Changing, Yet Unchanged, New Delhi: Rupa Publications – via Academia.edu
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- Lo Bue, Erberto; Bray, John, eds. (2014), "Introduction", Art and Architecture in Ladakh: Cross-cultural Transmissions in the Himalayas and Karakoram, BRILL, ISBN 978-90-04-27180-7
- Howard, Neil; Howard, Kath (2014), "Historic Ruins in the Gya Valley, Eastern Ladakh, and a Consideration of Their Relationship to the History of Ladakh and Maryul", Ibid, pp. 68–99, ISBN 9789004271807
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