I wanted to see some autumn colours, and also do a more challenging hike than the previous week. I chose a pair of minor peaks in the Nakanojo area, last visited a year and a half ago, not mentioned in my guidebook, nor shown on my hiking map. I knew about them thanks to a hiking pamphlet I had picked up during my stay at Shima Onsen in 2019. Although it wasn’t a long hike, it started from the valley bottom and seemed to go high enough to satisfy both my conditions. After riding the shinkansen to Takasaki, and then the Agatsuma line to Nakanojo station, I would catch the bus for Shima Onsen to the start of the trail. If I finished early enough, I could get the bus connecting with the Kusatsu limited express, direct for Ueno on the return; otherwise, I would use the same route as in the morning. I was a little concerned about the weather forecast: sunny in the morning but cloudy in the afternoon. I was looking forward to a peaceful hike on a quiet mountain and seeing the first autumn leaves of the season.
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View north towards the Joshin-Etsu Mountain Range

View of Mt Juni, Mt Komochi and Mt Akagi
It was a sunny day with few clouds as I got off the bus around 1030. After getting ready, I found the trail entrance behind Komaiwa village, and started hiking from 11am; according to the locals, I was 3rd person of the day to head up. I followed a gently sloping forest road through the cedars, before reaching a stone “torii” (shinto gate) and the start of a steep slope half an hour later.


First Autumn Colours
I got my wish for a workout as I followed the switchback trail up the mountain side through mixed forest. The leaves hadn’t changed yet this low down, but would probably look spectacular in a couple of weeks. With relief, I reached the top of the long climb just before noon. The trail then curved around the mountain, becoming faint at times, so that the final approach was along a ridge on the north side, buffeted by a cold wind.

Directly opposite, Mt Suisho and Mt Buno

Bird’s-eye view from the Top of Mt Sekison
I spotted the first autumn colours of the day on a bright red “momiji” (Japanese maple), to the right of the trail, as I followed the narrow ridgeline, now heading west. Very soon, I was walking under oranges and yellows, and after scrambling up a short steep bit, I emerged onto the top of Mt Sekison (石尊山 せきそんさん sekison-san), just before 12h30. The narrow summit was mostly free of trees, so I settled down for an early lunch.

View North from the Mt Sekison Summit

Mt Takada seen from Mt Sekison
I was surprised that such a little-known summit had such a great view: on the north side, I could see the foothills of the Joshin-Etsu mountain range; to the south was Mt Haruna; southwest was the pointed shape of Mt Asamakakushi, and behind, Mt Asama, sitting under a dark cloud; looking east, Mt Akagi, Mt Komochi and Mt Juni were lined up; directly below, I had a bird’s-eye view of the mountains and valleys of Nakanojo. At 1pm, I set off for the next summit, looking tantalizingly close further along the ridgeline.

The Mountains and Valleys of Nakanojo

View towards the Joshin-Etsu Kogen National Park
I hadn’t expected the next part to be so challenging: the trail kept on going up and down, and included a short rocky section fitted with rope; on the other hand there were good views to be had in both directions at various points. It took a full half hour to reach the top of Mt Takada (高田山 たかだやま takada-yama). Since it was mostly in the trees, I turned around at once and headed back along the up-and-down ridge, arriving at Mt Sekison around 2pm.

In the background, Mt Haruna

In the foreground, Mt Takeyama
I was amazed by how pleasantly warm it was, the sunny weather outperforming the forecast; since it was now too late to catch the earlier bus, I spent another thirty minutes enjoying the panoramic view. I had the summit to myself, having passed the two other hikers earlier in the day. After descending at a relaxed pace, I was back at the bus stop a little before 4pm.

On the right side, the Agatsuma River Valley and Mt Asamakakushi

Heading down through the Forest
The toughest part of this 4h1/2 hike was without doubt the roundtrip ridge walk between the two peaks: the views were superb but it required surefootedness due to the steep slopes on each side. If I had been faster, I could have enjoyed a comfortable train ride directly back to Tokyo, but since the good weather held throughout the day, it was worth spending more time on the mountain itself. Going a little later in the season, I could have seen more autumn leaves but I was glad I had gone when few other people were on the trail.
Watch the Video of the Hike on Youtube


















































































































