The Amur or Heilongjiang, as it is called in China, is one of the planet's ten mightiest rivers, yet it is hardly known to westerners.

Known as Heilong-jiang, meaning the Black Dragon, the Amur forms a natural border between Russia and China and has become a haven for wetlands and wildlife.

The Amur or Heilongjiang, as it is called in China, is one of the planet's ten mightiest rivers, yet it is hardly known to westerners.