From the summit, the views encompass the sandy beaches below, the forested slopes and the cultivated fields farther afield. At the peak is Hoành Sơn Quan (Transverse Mountain Gate), a gateway built during the Nguyễn Dynasty to control traffic on the mountain. The pass was once a major hindrance to land transportation with its winding and steep grade. A modern tunnel has since bypassed the climb, shortening the driving time through the pass as well as making it safer for drivers. The serpentine road ascending the pass is now restricted to sightseers only. The Ngang Pass is well known in Vietnamese literature through a famous poem by Bà Huyện Thanh Quan.