Shizuhara South Castle

The name “Shizuhara Castle” is commonly used to refer to two distinct sites on this mountain: what I call Shizuhara North Castle (at the peak) and Shizuhara South Castle (on a lower rise to the south). It is not a very well known nor well studied castle which is unfortunate because the ruins are abs

History

This castle was likely built by Akechi Mitsuhide to attack the Shizuhara North Castle. Records indicate there was significant construction on this ridge at that time. It seems each source that I refer to has slightly differing theories about this south castle site. (1) Mitsuhide built it to attack the North Castle (2) Mitsuhide took advantage of a satellite fortification and modified it for his attack (3) it was built by Mitsuhide after winning the battle to watch over this vital link between the Tsuruga Kaido and Kurama Kaido which could have been used to smuggle goods or troops around the north side of Kyoto. These all seem plausible, but, I think we can safely say it was built by Akechi Mitsuhide. Also, if it were simply a fortified encampment (陣城) built to attack the north castle I think the amount of stonework you see here is unnecessary for such a temporary fortification. Regardless of when it was built I suspect that it was used after the battle to watch over this roadway anyway in line with (3). The stone walls and defenses may have been further expanded or fortified for a more permanent fortification.

Field Notes

The name “Shizuhara Castle” is commonly used to refer to two distinct sites on this mountain: what I call Shizuhara North Castle (at the peak) and Shizuhara South Castle (on a lower rise to the south). It is not a very well known nor well studied castle which is unfortunate because the ruins are absolutely worth visiting. This is a situation where trekking out to these sites, observing the land and castle structures with your own eyes and making your own theories is critical. Most references lump them together as one complex, but I believe this obscures their distinct histories and layouts. The Kyoto Castle Survey treats them as the “North Bailey Grouping” and “South Bailey Grouping” within a single entry. However, Jōkaku Hōrōki clearly distinguishes the two, and Google Maps labels the north site as Shirotaniyama Shizuhara Castle. Based on my observations, I think it is appropriate to treat them as separate castles.

Shizuhara North Castle is located at the mountain summit and consists of terraced baileys along three ridgelines. There is minimal stonework: a possible gate foundation in the main bailey and one side bailey with stones that may have served as a retaining wall rather than fortifications. In contrast, the South Castle, which lies farther away than one might expect from maps, features extensive stonework, tatebori (vertical moats), and a prominent horikiri trench isolating it from the upper ridge — evidence of a later, more advanced fortification.

To reach the south castle you could simply scale the ridge from base of the south castle. There is no clearly marked trail and even coming down that way was a little tricky to find the right path but it is a quick and short way into the castle. If you've some this far anyway, you might as well climb the ridge from the west side of the Shizuhara Shrine, visit the Shizuhara North Castle and come down the opposite (east side) ridge to reach Shizuhara South Castle. However, be forewarned that while the trail up the ridge to the North Castle is relatively clean and easy to follow, the ridge down to the south castle is not. It is not clearly marked and there are many trees fallen over the trail that you will need to climb over/under or around. Feel free to use my Yamap Trail for Shizuhara Castle if it will help.

See Shizuhara North Castle for more details.

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Gallery

North Castle left peak, South Castle right peak

Castle Profile
English Name	Shizuhara South Castle
Japanese Name	静原城（南城）
Founder	Miyoshi Nagayoshi
Year Founded	1555
Castle Type	Mountaintop
Castle Condition	Ruins only
Historical Period	Pre Edo Period
Features	trenches
Visitor Information
Access	Ichihara Station (Eiden Line), bus to Shizuhara
Hours	Mountain trails, open any time
Time Required	120 mins
Location	Kyoto, Kyoto
Coordinates	35.11851, 135.78801
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Admin
Added to Jcastle	2025
Contributor	Eric
Admin Year Visited	2025
Admin Visits	January 5, 2025
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