千岩万壑

Explanation: Described as rolling hills, high and low overlap. 　　Usage: Joint type; as adverbial, object; describe the rugged terrain 　　Source: Southern Song Liu Yiqing "Shi words": "Gu Changkang from Hueiji also, the beauty of mountains and asked Gu Yun: 'Qian Yan King show, myriad fight flow, vegetation kept the cage on it, Ruoyun Xing Wei Xia '. " 　　Examples: ~ For the wild places, gut laughing Bird Road, Jin fans. (Chen Yi, "Lok Road, Wen Jie Yihuang" Poetry) Thesaurus:  peaks over peaks, Qianshanwanhe, peaks rising one upon another, TIMES Chibaya, long trip