This study is a continuation of the plans and reports from the first study of a reserach project. In addtion, a survey was conducted on the Batongguan Historical Trail from the Qing Dynasty and the Japanese-era Batongguan Traversing Road in cooperation with the Yushan National Park Headquarters, who was conducting a research on the ancient roads in the park. In the study, aerial photographs from the first study were analysed and preliminary field surveys were conducted. According to tectonic structures and litho-geology, the east-west exposed geological profile at Yushan National Park can be divided into five types. The east-west geologic terrane and lithostratrigraphy are listed below: 1. The Dananoa group--exposed in the Central Mountain Range and had gone through metamorphosis and folding a number of times in the past. 2. The Bilu geoloic terrane--exposed on the west slope of the Central Backbone Range and is a widely spread terrane from the Eocene epoch. 3. The Lushan geologic terrane--exposed on the west slope of the Central Backbone Range and consists of argillite and slate from the Miocene epoch. 4. The Yushan geologic terrane--refers to the southern end of the formation extending from Siueshan to Yushan in the west of the Central Backbone Range 5. The sedimentary rock geologic terrane--refers to the non-metamorphosised formation (mainly a Nanjong terrane from the Miocen epoch) in the northwest part of the park and is exposed on the west of Dongpu, Salihsian River valley, and Tataka saddle.