Salt pans on 'roof of the world'

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.