杳无人迹

Explanation: Yao disappeared; track footprints. Even a person's footprint can not see. Describe the place is very desolate, remote, no one has ever been. 　　Source: Tang Changyi "Ling Zhi Zheng Shao-gui" to next spring, Shao complex now, but see safflower bamboo, water hills, uninhabited. Shao is the No. grief and return by day. " 　　Examples: Through the kiosk, a swing one, together with the clouds; and Fen cable and lifeless, ~. ★ Qing Pu, "Strange Tales of West Lake"