The sacred Himalayan peak that once hosted a secret CIA nuclear listening post
In short: Nanda Devi, the highest mountain located entirely within India, is a place of profound religious significance and extreme ecological fragility. Beyond its reputation as a climber's ultimate test, the mountain carries a bizarre Cold War legacy: a lost nuclear-powered device left near its summit by American intelligence agents in 1965.
Known as the Bliss-Giving Goddess, Nanda Devi is the patron deity of the Garhwal and Kumaon Himalayas. As a two-peaked massif, it is protected by a formidable barrier ring of high mountains, including twelve peaks exceeding 6,400 metres. This natural fortress, the Nanda Devi Sanctuary, remained largely inaccessible until 1934, when British explorers Eric Shipton and H. W. Tilman finally navigated the treacherous Rishi Gorge. The mountain’s steep profile, rising over 3,300 metres above its base, cemented its status as one of the world's most daunting mountaineering challenges.
The mountain's history took a clandestine turn between 1965 and 1968. The CIA, in cooperation with India's Intelligence Bureau, attempted to install a nuclear-powered telemetry relay device on the summit to monitor Chinese missile tests in Xinjiang. Dangerous weather forced the team to abandon the mission, leaving the radioactive equipment on the mountain. Subsequent recovery efforts failed, and the incident led to the closure of the Sanctuary to foreign expeditions for years. Today, the area is a UNESCO World Heritage Site, strictly managed to protect its delicate ecosystem from the damage caused by decades of human traffic.
Environmental concerns led to a total ban on climbing and local access in 1983, though limited exceptions have been made for ecological surveys. In 1993, an Indian Army expedition removed over 1,000 kilogrammes of refuse from the park. While the core zone remains heavily restricted, recent initiatives have opened the region to controlled eco-tourism, allowing a maximum of 500 trekkers to visit between May and October. Despite these efforts, the mountain remains volatile; in 2021, a glacier break caused catastrophic flooding in the surrounding valleys, highlighting the ongoing environmental instability of this sacred, high-altitude landscape.
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Sources
- Summary by Intellect · source: Nanda Devi
- Also: Wikidata — Nanda Devi · CC0
- Also: Wikidata — Nanda Devi · CC0
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