Salt pans on 'roof of the world'(1/9)

Aerial view shows salt pans in Mangkam County, Qamdo, southwest China's Tibet Autonomous Region, Feb. 13, 2023. (Photo: China News Service/Li Lin)

An ancient technique of salt production dating back to 1,000 years ago is well-preserved in Tibet and local people follow a traditional salt harvesting method by collecting brines from salt mines and ponds and evaporating them in the sun until crystallization.

Aerial view shows salt pans in Mangkam County, Qamdo, southwest China's Tibet Autonomous Region, Feb. 13, 2023. (Photo: China News Service/Li Lin)

Crystallized salt hangs on salt pans in Mangkam County, Qamdo, southwest China's Tibet Autonomous Region, Feb. 13, 2023. (Photo: China News Service/Li Lin)

Aerial view shows salt pans in Mangkam County, Qamdo, southwest China's Tibet Autonomous Region, Feb. 13, 2023. (Photo: China News Service/Li Lin)

Villagers work in salt pans in Mangkam County, Qamdo, southwest China's Tibet Autonomous Region, Feb. 13, 2023. (Photo: China News Service/Li Lin)

Villagers work in salt pans in Mangkam County, Qamdo, southwest China's Tibet Autonomous Region, Feb. 13, 2023. (Photo: China News Service/Li Lin)

Aerial view shows salt pans in Mangkam County, Qamdo, southwest China's Tibet Autonomous Region, Feb. 13, 2023. (Photo: China News Service/Li Lin)

Aerial view shows salt pans in Mangkam County, Qamdo, southwest China's Tibet Autonomous Region, Feb. 13, 2023. (Photo: China News Service/Li Lin)

Aerial view shows salt pans in Mangkam County, Qamdo, southwest China's Tibet Autonomous Region, Feb. 13, 2023. (Photo: China News Service/Li Lin)