On August 18 about 7 pm, a mirage occurred 500 meters from Er Lang Jian scenic area in Qinghai Lake. The mirage lasted about one hour. In the beginning, some sand dunes and buildings appeared. Later, a railway station emerged between the two dunes.

A mirage is a naturally occurring optical phenomenon in which light rays are bent to produce a displaced image of distant objects or the sky.

By People's Daily Online