picture_planetary_boundaries_3_erosion_Dunhuang_china

2561 × 1704 Planetary Boundary 3 – Erosion

Dunhuang, Gansu, China, was a very prosperous city on the Silk Road. 1500 years ago, it was the capital of the Western Liang country, and had more inhabitants than Rome. Actually more than any city in Europe. Now surrounded by desert.

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