The benchmarking point No. 59 at Dazheng Police Post in Datong Township, Yilan County is located near the Mingchi Forest Recreation Area. To get there, go from the Northern Cross-island Highway, cut eastward to Fanfan Creek, then up the Sanxing Historic Trail in Jiaobanshan, and follow the road to arrive at Dazheng Police Post and Dazheng Bridge. The Jiaobanshan Sanxing Historic Trail, which traverses the Fuxing District of Taoyuan City and Sanxing Township in Yilan County, was built in 1911 and has a total length of about 125 km. It is the earliest road excavated for Lifan (regulating Indigenes) purposes during the Japanese occupation. A total of 14 police posts were set up along the way, and Dazheng Police Post was one of them.
Today, most sections of the Jiaobanshan Sanxing Historic Trail have been replaced by the Northern Cross-island Highway.
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