Meander

Dewu River Terrace is located on the east side of the confluence of Xiuguluan River and Fuyuan River in Ruisui Township, Hualien County. It is the starting point where Xiuguluan River cuts through the coastal mountains. 

The traditional name is Lulnu, which means paper mulberry because in the past, there were many wild paper mulberry trees here. It is also an area where the Amis people do dry farming and grazing. Overlooking from the Ruigang Industry Road, it is clear that the Dewu River Terrace descends from south to north. This shows that the river is continuously migrating to the north during the downward cutting process, which results in asymmetric growth meanders on both sides of the river bank. In addition, there is a prehistoric cultural site on the hillside of the Dewu River Terrace as fragments of plain pottery from the Jingpu hamlet have been found. This presumes that this was where the Amis people lived in the early days.

Houzishan (Monkey Mountain) is a river terrace along the Xiuguluan River that is located on the east side of the Dewu river terrace in Ruisui Township, Hualien County. Its traditional name is Kawasan, which means a place where gods and ghosts appear. Therefore, it is also called Ghost Mountain. It is said that macaques came here to forage in the past. Xiuguluan River is the largest river in eastern Taiwan, with a total length of about 104 km. In the process of cutting through the coastal mountains, many steep canyons have also been formed, resulting in developed meanders and river terraces, such as Dewu River Terrace, Monkey Mountain, and Chimei River Terrace. This makes an excellent classroom for observing geology or topography.

The Xiuguluan River begins from the Central Mountain Range. It runs north along the Huadong Rift Valley, and turns eastward at Ruisui Township in Hualien County. Then it cuts across the coastal mountains and finally flows into the Pacific Ocean at Dagangkou (Cepo’) Hamlet. It is the largest river in eastern Taiwan with a total length of about 104 km. Also, it is the only river in Taiwan that cuts through the coastal mountains. During the process of cutting through the coastal mountains, the Xiuguluan River also cuts many steep gorges, resulting in some quite developed meander and river terraces, such as Dewu River Terrace, Monkey Mountain, and Chimei River Terrace. This makes an excellent classroom for observing geology or topography.