Mt. Tengu-dake

(Photo: View toward Roudake from the summit of Mt. Tengu-dake)

Generally, the northern part from Natsusawa Pass is Kitayatsugadake and the southern part is Minamiyatsugadake.
Mt. Tengu-dake is the highest peak of Kita-Yatsugatake, higher than Tateshinayama. Mt. Tengu-dake is the highest peak of Kita-Yatsugatake, which is higher than Mount Tateshina. As a relatively easy mountain to approach in both summer and winter, it is popular as an introduction to serious mountaineering. Nishitengu is slightly higher than Tateshinayama at 2,646 meters.
The difference in appearance between the east and west peaks is not due to a volcanic eruption unique to Yatsugatake, but to a large-scale collapse of the mountain that occurred during the Heian period (794-1192). (It is said that the collapse of the mountain body on the east side of the Yatsugatake mountain range caused the rivers in the area to be blocked, creating a huge lake, which subsequently led to massive flooding.) Compared to the mountains seen from the Chino City side in the west, Mt. Tengu seen from the Shirabiso Hut in the east is a severe and steep mountain, with the peak of Tengu Nose and other mountains standing like a wall. It is hard to imagine that a mountain body collapsing to form a large lake occurred just over a thousand years ago, but the ability to catch a glimpse of such traces in this area is perhaps the best part of mountain climbing.
It is the only single peak in the Yatsugatake mountain range with 200 peaks, but it is a famous peak that can be enjoyed in a variety of ways.