Dubbed as the Atlantic Ocean's last teardrop, Sayram Lake, in Bortala Mongol Autonomous Prefecture, Xinjiang Uygur Autonomous Region, holds within its beautiful underwater mountains and valleys. Chen Bo/ CGTN

The lake, at an altitude of 2,071 meters above sea level, is 30 kilometers long from east to west, and 25 kilometers wide from north to south. Chen Bo/ CGTN

It spans 453 square kilometers and contains 21 billion cubic meters of water. Dive into the waters of the lake to discover a colorful sunken world. Chen Bo/ CGTN

Sayram Lake, Bole city, Bortala Mongol Autonomous Prefecture, northwest China's Xinjiang Uygur Autonomous Region. Chen Bo/ CGTN

Sayram Lake, Bole city, Bortala Mongol Autonomous Prefecture, northwest China's Xinjiang Uygur Autonomous Region. Chen Bo/ CGTN