By ando 
Iizuna Town, Kamiminochi District, Nagano Prefecture. Nestled among the mountains of Hokushin Goka, this land is home to an ancient jinja that still conveys the pride of the powerful clan who once ruled this region. That is Imokawa Jinja.
The jinja grounds, enveloped in a tranquil forest, are filled with a robust faith that has weathered the storms of history, and a vibrant energy that captivates visitors. This time, we delve into the stories of warriors and the mysterious legends hidden within this jinja.
Basic Information
Location: 1245 Miyawaki, Oaza Imokawa, Iizuna Town, Kamiminochi District, Nagano Prefecture
Enshrined Kami: Takeminakata-no-mikoto
Main Festival: Annual Grand Festival (September)
Cultural Property: Imokawa Jinja’s Goshimboku (Sacred Tree) (Iizuna Town Designated Natural Monument)
The Tenacity of the Fierce Warrior Imokawa Clan: Memories of the ‘Imokawa Ikki’ that Shook Oda Forces
In discussing Imokawa Jinja, the medieval powerful clan, the Imokawa clan, who made this area their base, is indispensable. The Imokawa were influential kokushu (local lords) of Shinano, who defended this land amidst renowned Sengoku daimyo such as Takeda Shingen and Uesugi Kenshin.
The most compelling episode related to this jinja is the ‘Imokawa Ikki’ (Imokawa Uprising) of Tensho 10 (1582). When the Takeda clan fell and Oda Nobunaga’s forces invaded Shinano, local powers led by Imokawa Chikamasa attempted fierce resistance against Oda’s fierce general, Mori Nagayoshi.
One theory holds that the Imokawa warriors prayed for victory at this jinja and used their knowledge of the local terrain to outmaneuver the Oda forces. Ultimately, they were defeated by overwhelming military power, but their indomitable spirit has been passed down as ‘the divine power of Imokawa Jinja’ and is still deeply revered today as the guardian deity of the region.
Over 800 Years Old! The Mystery of the Giant Sugi Tree rumored to ‘House a Kami’
Stepping onto the jinja grounds, the first thing that catches your eye is ‘Imokawa Jinja’s Goshimboku,’ a large sugi (Japanese cedar) designated as a natural monument of Iizuna Town.
This giant sugi has mysterious legends dating back to ancient times.
Foretelling War: A legend remains that long ago, before unusual events occurred in the village or major battles began, the leaves of this sugi would rustle unnaturally, as if sounding an oracle.
A Sacred Tree that Evades Lightning: It is said that despite taller trees in the vicinity, only this goshimboku has consistently escaped fatal lightning strikes. Locally, it is revered as a powerful spot for protection against calamities.
If you touch its trunk, you will surely feel its overwhelming vitality and the weight of the long years it has watched over this land.
Behind the Story: Why the Name ‘Imokawa’?
Many might associate the name ‘Imokawa’ (literally ‘potato river’) with potatoes or taro. However, its origin is surprisingly mysterious.
One theory suggests it derives from the shape of the river flowing through this land, or from an ancient word meaning ‘sacred place.’ Another theory states that the Imokawa clan was originally a branch of the Inoue clan, and they adopted the name ‘Imokawa’ from the local place name when they settled here. It is a well-known anecdote among history enthusiasts that the name ‘Imokawa’ was not merely a reference to an agricultural product, but rather a brand name symbolizing the pride of the warriors of northern Shinano.
Key Points for Visiting
Imokawa Jinja is not a flashy, tourist-oriented shrine. However, it possesses the dignified, serene atmosphere that only a ‘true ancient jinja’ can offer.
Its beauty is especially remarkable in the early morning mist or during the snow-covered winter months. The intricate carvings on the haiden (worship hall) display powerful designs, likely influenced by the Takeda and Uesugi clans, showcasing the high skill of artisans from that era.
Why not enjoy Iizuna Town’s rich nature and feel the breath of history at this sacred site that warriors once risked their lives to protect?
Related Links / References
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