Introduction to the Alpine Red Post: Located at the top of Xishan Mountain in Nanshan Ranch, it is known as the Nanshan Air Defense Post and was the highest-altitude post built in the central and southern provinces at that time. When you climb up to the post and look around, you can have a panoramic view of the eighty-mile Nanshan Mountain. The outpost has complete facilities and a solid structure. It consists of five parts: barracks, bunkers, tunnels, trenches, and basketball courts.