Otokozaka and Onsaka are mountain trails that go along the ridges and valleys of Mt. Oiwa, respectively. Otokozaka, you can enjoy the autumn leaves along the ridge and on the slopes of the mountain on both sides. On the other hand, Onnazaka is lined with dense cedar forests. The autumn leaves can be seen on Otokozaka and Onnazaka from around November 20 to early December, at the same time as at the foot of the slopes near the entrance. The closer to the exit, the later the autumn leaves appear, from the end of November to the beginning of December.
The above photo is an aerial photograph of the autumn leaves of Mt. Oiwa taken from above Saishoji-Temple-Honbo.