The western slope of Changbaishan offers a separate and distinctly different experience from the northern approach. A dedicated entrance about 100 kilometres from the northern gate accesses the Changbaishan Canyon — a deep gorge carved through dramatic volcanic rock formations by rivers draining the mountain's western flank. The canyon walls expose layers of different volcanic deposits, and the colours change with the light and the season.
This approach tends to be considerably less crowded than the northern slope, particularly outside the peak July–August period. The two slopes cannot be combined in a single day visit without significant logistical effort; if you have time for only one, the northern slope offers the summit crater views. But if you are spending more than one day in the Changbaishan area, the western slope adds a very different dimension. The lower elevations on the western side stay accessible longer into autumn, and the canyon is particularly striking when the surrounding birch forest turns yellow in October.