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Photo: Harikrishnank123, CC BY-SA 3.0 via Wikimedia Commons
At 4,500 m, it is the highest observatory in India.
The Indian Astronomical Observatory (IAO) is a high-altitude astronomy station in Hanle, Ladakh, India, operated by the Indian Institute of Astrophysics. Situated in the Western Himalayas at an elevation of 4,500 metres (14,800 ft), it is among the world's highest sites for optical, infrared, and gamma-ray telescopes. It is the tenth-highest optical telescope in the world.
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