Yokoyairi-toride was perhaps built by the Akazawa Clan; their yakata was located in what is now the resort town of Asama-onsen. The Akazawa were vassals of the Ogasawara Clan. The fort was at one point held by the Inukai Clan, based at Inukaijō and Inukai-yakata. The Asama Clan held the fort between 1532 and 1550. Yokoyairi-toride fell to the Takeda Clan in 1550 and was destroyed.
Yokoyairi-toride consisted of a shukuruwa (main bailey) with two horikiri (trenches) protecting the plain-side approach and at least three protecting the mountain-side rear.
Sources alternately refer to this site as a "castle" ruin and merely as a toride (small fort) ruin. I am going with toride because it says that at the site itself. There is not much to see here. If I had known how little, I probably wouldn't've come up, but I'm glad I did for the views of Asama-onsen and the Japanese Alps. There is a marker indicating the site around 800m up. This was likely the main enclosure but that's about it for ruins that I could identify. I was also under the impression, looking at satellite imagery, that the mountain was fairly open, but tree growth has since rebounded after a forest fire scourged the mountain years ago.
During the hike up I came across a giant hornet. I just kept my head down and kept on walking. Luckily the beast was obviously engaged with some other nefarious errand and did not bother to harass me.
|English Name||Yokoyairi Fort|
|Castle Condition||Ruins only|
|Historical Period||Pre Edo Period|
|Access||Matsumoto Station; taxi or bicycle|
|Visitor Information||24/7 free|
|Time Required||60 mins|
|Location||Matsumoto, Nagano Prefecture|
|Coordinates||36° 15' 48.96" N, 137° 59' 55.68" E|
|Added to Jcastle||2020|
|Admin Year Visited||Viewer Contributed|
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