China's biggest ice cave, located in Shanxi province, continues to accumulate ice, according to local sources.

The cave, in the Luya mountain in Ningwu county, Xinzhou city, is connected to the Fenhe River, which is believed to be the water source, said Du Erping of the Luya scenic area's management office.

The cave is more than 100 meters deep at an altitude of approximately 2,300 meters. It was formed around 3 million years ago.