Mt Yokogai (593m), Honjo City, Saitama Prefecture, April 2021

I wanted to visit Chichibu as I hadn’t been there since Mt Jomine last December. Looking through my guidebook, I found a four-hour hike along a ridge in northern Saitama, above a valley that used to be a secret Christian hideout during Tokugawa times. I could access it via train or by bus; I chose to go by train, allowing me to leave later, and then return by bus in the mid-afternoon. The weather for the next day was supposed to be sunny but windy, not much of a concern in the warmer spring days. I was looking forward to visiting this “hidden valley” and seeing the views on the border between Saitama and Gunma prefectures.

Looking down at Onishi town from the summit

I arrived at Nogami station before 10am under light blue skies. After walking for thirty minutes along paved roads surrounded by light green hills, I reached a forest road up a small river valley which soon turned into a small hiking path. Just past 10am, I emerged onto a small road on the ridgetop where I was greeted by strong gusts of wind. I quickly continued down the other side and reached a clearing full of tree stumps – a good place to sit down for a late breakfast.

The forest road at the start of the hike

A good place for a break

Opposite, I had a view of the today’s mountain, barely distinguable from the other minor peaks along the ridge. It was less windy here and I could hear many different birds singing nearby. I set off again and soon reached the road at the bottom of the valley. I turned right and followed the Koyama river downstream. I stopped by Hanaogi (花扇), a small confectionery shop, to buy some “manju“, buns filled with sweet-tasting red bean paste.

On the right side under the big cloud, Mt Yokogai

Start of the hiking trail for Mt Yokogai

As the noon chime echoed across the valley, I crossed a bridge and turned left onto a road heading up. At 12h30 I was back on a hiking trail up another river valley through a cedar forest. This time, the river was dry; instead of the noise of water, I could hear the noise of the wind blowing through the treetops. It took only a few minutes to reach the ridgetop, where I took a short path off the main trail to a huge sacred rock called “Gongen Iwa” (権現岩 ごんげんいわ).

In the center, Mt Jomine

Sunny hiking near the top

I found a sunny spot out of the wind to snack on a “manju“. I then made my way back to the main trail and followed the ridge northwards. I soon reached an area clear of trees with a view of Mt Jomine to the south. Next I arrived at another viewpoint to the west from where I could see Onishi town and Mt Sakura; but I wasn’t at the highest point yet, and a few more minutes brought me to the top of Mt Yokogai (横隈山 よこがいさん yokogai-san). Straight ahead, I could see Mt Akagi, Mt Haruna, and even the snow-capped peak of Mt Asama.

First viewpoint just south of the summit

Lake Kanna between Saitama and Gunma

I enjoyed a quiet lunch before heading back the same way. It was only 2h30 and I was ahead of schedule. At the junction for Gongen Rock, I continued straight on an up and down path taking me past a view point of Kanna lake and ending at a paved road. From there, it was easy walk down to the bus stop at the bottom of the valley. I had an hour before the 4h30 bus so I went and bought some more “manju“. At Minano station, I caught the Chichibu line for Kumagaya and then transferred to the Shonan-Shinjuku line for the one hour trip back to Tokyo.

See the sights and hear the sounds of Mt Yokogai

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