Photo: Beautiful park on Huguangyan lake, one of China's three "crater lakes" formed by volacanos.
A record decline in the water level at Huguangyan's volcanic lake in Guangdong has raised concern that the sleeping volcano is about to have a wake-up call.
At 2.3 square kilometers, Huguangyan is the world's largest volcanic lake. It is located in the southwest city of Zhanjiang.
It has recorded its lowest water level in 10 years and during the second half of 2006, the level dropped 5 meters.
Evolved from an extinct volcano centuries ago, the lake experienced a dramatic reduction in water during the second half of 2006 when the level fell 5 meters to reach 13 meters.