Siyuan Pass — Siyuan Pass is the boundary point between Taichung City and Yilan County, and it is also the watershed of the Lanyang River, Dajia River, Qijiawan River, and Yousheng River. It is also the dividing line between two climates, thus creating unique geological landscapes and a special abundance of plant species, making it a great place to experience natural ecology.

Siyuan Pass. Siyuan Pass is the boundary point between Taichung City and Yilan County, and it is also the watershed of the Lanyang River, Dajia River, Qijiawan River, and Yousheng River. It is also the dividing line between two climates, thus creating unique geological landscapes and a special abundance of plant species, making it a great place to experience natural ecology. Siyuan Pass is the boundary point between Taichung City and Yilan County, and it is also the watershed of the Lanyang River, Dajia River, Qijiawan River, and Yousheng River. It is also the dividing line between two climates, thus creating unique geological landscapes and a special abundance of plant species, making it a great place to experience natural ecology. Address: 臺中市和平區平等里710林道 Hours: 00:00–23:59 Taichung