张掖南枕祁连山，北依合黎山、龙首山，黑河贯穿全境，形成了特有的荒漠绿洲景象。
Zhangye rests it head on Qilian Mountain in the south and leans on Heli Mountain in the north , with Hei River running through its territory , forming a distinguished view of oasis in desert .
龙首山