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Mount Togakushi 岩戸·龍·鬼女の山 ── 戸隠山

天手力雄·九頭龍·紅葉。神話と鬼女が重なる北信の霊峰

岩戸·龍·鬼女の山 ── 戸隠山

Mount Togakushi · とがくしやま

Also known as: 戸隠
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長野市の北西、深い杉木立に抱かれてそびえる戸隠山。戸隠神社の五社が山中に点在する、北信濃きっての霊山である。この山には、三つの伝説が地層のように積み重なっている ── 天照大神を岩戸から導き出した神話、水を司る九頭龍の信仰、そして都から流された鬼女·紅葉の物語。

神と、龍と、鬼。本来まじわらぬはずの三者が、なぜ一つの山に同居するのか。本稿は、戸隠山に折り重なる伝説の層をたどる。

投げられた岩戸

戸隠という名は、日本神話の核心 ── 天岩戸の物語に由来する。天照大神が天岩戸に隠れて世が闇に閉ざされたとき、怪力の神·天手力雄命(あめのたぢからおのみこと)が岩戸をこじ開け、大神を外へ導き出した。このとき、天手力雄命が投げ飛ばした岩戸が、はるか信濃の地に落ちて戸隠山になったと伝わる。「戸を隠した山」── 戸隠の名は、こうして生まれた。天岩戸の神話は、闇に呑まれた太陽がふたたび姿を現す ── 死と再生、光の回復をめぐる物語である。その岩戸が落ちた山とされることで、戸隠は神話的な力を帯びた特別な地として観念された。山そのものが、神々の事績を刻んだ証として崇められたのである。

戸隠神社は奥社·中社·宝光社·九頭龍社·火之御子社の五社からなり、その奥社の祭神が、岩戸を投げた天手力雄命である。神話の一場面が、そのまま一つの山の縁起となり、五つの社へと展開している ── 戸隠は、神話を地形に刻みこんだ山なのである。

九頭龍の水神

戸隠には、天手力雄命が祀られるより古くから鎮まる神がいる。九頭龍大神である。九頭龍社に祀られる九頭龍大神は、戸隠の地主神であり、水を司る龍神として、雨乞い·縁結び·歯痛にご利益があるとされる

九つの頭をもつ龍 ── その姿は、水源の山に対する古い畏れを映している。山に降る雨は谷を満たし、里の田を潤す。その水の根源を握る存在として、龍はあがめられた。雨乞いの神であると同時に歯痛の神でもあるという、一見ふしぎな取り合わせも、荒ぶる水神を鎮めれば災いも除かれるという、素朴な信仰のあらわれであろう。戸隠は修験道·山岳信仰の一大霊場として栄え、岩戸の神話と龍の信仰が、修験者たちの修行のなかで分かちがたく結びついていった。

五社をめぐる山

戸隠神社は、一つの社殿を指す名ではない。山中に点在する五つの社 ──奥社·中社·宝光社·九頭龍社·火之御子社の総称である。岩戸を投げた天手力雄命を祀る奥社へは、樹齢数百年といわれる杉が立ち並ぶ長い参道をたどる。その途中に建つ朱塗りの随神門は、戸隠を象徴する景観として知られる。中社·宝光社には学問や開運の神が祀られ、九頭龍社には古い地主神·九頭龍大神が鎮まる。一つの山を歩きながら、神話の神、学問の神、水の龍神を順に詣でる ── 戸隠の参拝は、それ自体が伝説の層をたどる旅でもある。

鬼女紅葉と平維茂

神と龍の山には、もう一つ、鬼の物語が刻まれている。鬼女·紅葉(もみじ)の伝説である。

Momijigari (The Demon of the Maple Viewing)

moh-MEE-jee-GAH-ree

“Momijigari” is the title and theme of a famous tale, widely preserved in medieval and later performing arts and literature, in which the warrior Taira no Koremochi slays a demoness dwelling on Mount Togakushi in Shinano. In Noh, joruri, and kabuki, elegant ladies enjoying the autumn maples are revealed to be the demoness Momiji; aided by divine protection, the warrior sees through the disguise and defeats her. Best known as the title of stage works, the demoness image formed where local legend and the theater tradition intersected.

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美しい姫君が、山深い地で人を喰らう鬼へと変わる ── その落差の凄まじさが、紅葉の物語を忘れがたいものにしている。伝説によれば、紅葉はもと都に生きた女であったが、信濃の戸隠へ流され、やがて鬼女と化して土地の人々を苦しめたという。これを討ったのが、平維茂である。朝廷の命を受けた維茂が、戸隠山に分け入って鬼女紅葉を退治した ── 美しい女が、山の奥で恐ろしい鬼へと変わる。嫉妬や情念のはてに女が鬼となる物語は各地にあるが、紅葉の伝説は、それを戸隠という具体の霊山に結びつけた点に特色がある。戸隠周辺には、この伝説にちなむ地名が今も残ると語られる。紅葉の伝説には、いくつもの異伝がある。都で生まれた呉葉(くれは)という女が、のちに紅葉と名を変え、信濃の地で一党を率いて勢力を張ったとも語られる。鬼女とされたその姿の裏に、中央の支配に従わなかった在地の者の影を読む見方もある。維茂の討伐も一度では成らず、神仏の加護を得てようやく紅葉を斃したと伝わる ── 鬼を討つ物語には、しばしば、討たれる側の声が幽かに残っている。

能《紅葉狩》── 紅葉の宴の罠

紅葉の物語を、舞台の芸術へと昇華したのが、能《紅葉狩(もみじがり)》である。作者は観世小次郎信光── 大江山の酒呑童子を描いた《大江山》の作者でもあり、鬼を題材とする壮麗な能を得意とした人である。

物語はこう進む。平維茂が戸隠山で紅葉狩の宴に興じる美しい女たちに出会う。維茂はその舞と酒に酔い、眠りに落ちてしまう。だが夢のなかに八幡神の使いが現れ、神剣を授ける。目覚めた維茂は、女たちの正体が鬼女であることを見抜き、神剣をもってこれを討つ。紅葉に染まる秋の山の華やかな宴が、一転して鬼との死闘へと変わる ── その鮮烈な転換が、この曲を能のなかでも屈指の人気曲にした。五番目物(鬼物)に分類され、各流派で今も舞われている

三つの伝説が、
重なる山

戸隠山のおもしろさは、性格の異なる三つの伝説が、一つの山に積み重なっている点にある。

天照大神を救った神の岩戸が落ちた、神話の山。九つの頭をもつ龍が水を司る、水神の山。そして、美しい女が鬼と化し、武士に討たれた、鬼女の山。光の神話と、水の信仰と、鬼の物語 ── まるで地層のように、時代の異なる伝説が折り重なっている。修験の行者たちは、この重層した聖地を歩きながら、神と龍と鬼のすべてに祈りを捧げてきた。一つの山が、これほど多彩な顔をもつことは珍しい。

かつて戸隠は「戸隠十三谷三千坊」と称されるほど、多くの僧坊が谷々に立ち並ぶ一大霊場であった。全国から修験者と参拝者を集め、その賑わいは比叡·高野にもなぞらえられた。明治の神仏分離をへて寺は神社へと姿を変えたが、奥社へ続く杉並木の荘厳さも、九頭龍への篤い祈りも、今なお絶えていない。近年は屈指のパワースポットとして、また名高い戸隠そばの里として、四季を通じて多くの人がこの霊山を訪れている。

戸隠は、信濃の山岳信仰の奥深さを、もっともよく示す霊山の一つである。信濃国全体については信濃国の妖怪事典、長野県全体については長野県の妖怪事典も併せて読まれたい。

All yokai of Mount Togakushi3

Complete list of yokai linked to Mount Togakushi, including those not featured in the article above.

  • Ame-no-tajikarao

    Ame-no-tajikarao

    Divine

    ame-no-tajikarao

    Ame-no-tajikarao, the God of Strength Who Opens the Rock Cave

    Deity / Divine SpiritTakamagahara / Sana-no-agata (now Taki, Taki District, Mie Prefecture) / Mount Togakushi (now Togakushi, Nagano City, Nagano Prefecture)

    Merely calling Ame-no-tajikarao a "god of strength" fails to capture his true sharpness. In the Kojiki's Heavenly Rock Cave ③, he takes action at the precise moment when the myriads of gods are making noise, Ame-no-uzume is dancing, Ame-no-koyane and Futodama present the mirror, and Amaterasu-Omikami begins to peek out from inside the door. Ame-no-tajikarao is not a director controlling the scene. After the wisdom of Omoikane, the laughter-inducing dance of Ame-no-uzume, and the prayers and mirror of Ame-no-koyane and Futodama have all accumulated, only he, hiding on the sidelines, directly takes the goddess's hand. In mythology, "touching" carries heavy weight. He does not forcibly drag the sun goddess out, but rather seizes the slight movement of her leaning outwards, securing her on the side of the world. His power is both physical brawn and the ability to read the exact right moment. The resolution of the Heavenly Rock Cave myth is structured as a collaborative effort by multiple gods. As pointed out by Kokugakuin University's Artifact Database, this scene layers elements of ancient rituals such as divination bones, forging, mirrors, jewels, cloth, and sakaki branches. Omoikane thinks, Ishikoridome makes the mirror, Tamanoya makes the magatama, Ame-no-koyane and Futodama handle the ritual and words, and Ame-no-uzume directs Amaterasu's enclosed consciousness to the outside through laughter and dance. Within this entirety, Ame-no-tajikarao bears the shortest and most irreversible action. For prepared rituals to change reality, a physical body to "open" was needed at the very end. Therefore, his divinity lies not in solitary super strength, but in the final point where ritual makes contact with the world. In the Kojiki, immediately after Ame-no-tajikarao takes Amaterasu's hand and pulls her out, Futodama stretches a shirikumena (shimenawa) behind her and declares, "You may not return further inside than this." This sequence is crucial. Because opening and making return impossible are continuous. The restoration of light cannot be achieved merely by opening the door temporarily. It was necessary to end the state of self-confinement and seal that boundary with a sacred rope so that darkness would not cover the world again. Ame-no-tajikarao is the god who lays his hand on the boundary between the inside and outside of the rock cave, darkness and light, retreat and reappearance, completing the mythological "restoration of light" by pairing with Futodama's rope. Taking into account the variant traditions in the Nihon Shoki lineage, this god's actions become even more multi-dimensional. Kokugakuin University's annotation on Heavenly Rock Cave ③ introduces that in the main text of the Nihon Shoki's seventh stage, it is depicted as Tajikarao-no-kami catching Amaterasu's hand and pulling her out, while in the first variant (Issho 3), it is depicted as Ame-no-tajikarao-no-kami standing by the rock door and pulling it completely open. If the Kojiki focuses on the "divine hand," the Nihon Shoki variant shifts the focus to the "rock door" itself. In either case, he is the god who breaks the blockage. Whether the object is the hand of a god or a door of stone, Ame-no-tajikarao's action lies in breaking through boundaries. The "hand" included in his name can be read not merely as a symbol of muscular strength, but as an organ that directly intervenes between the divine and the world. His reappearance in the Descent of the Heavenly Grandson ② reconnects the scene of the Heavenly Rock Cave to the Ise ritual system. In the main text, in addition to the descent of the five attendant deities, the eight-span mirror, magatama, and Kusanagi sword, Tokoyo-no-omoikane-no-kami, Ame-no-tajikarao, and Ame-no-ishikadowake-no-kami are added as accompanying deities. It further notes that the mirror should be worshipped as the spirit of Amaterasu-Omikami, and that Ame-no-tajikarao is enshrined in Sanana-no-agata. Here, he transitions from the hero of the momentary opening of the rock cave to a member of the ritual order that transfers Amaterasu's spirit to the earth. If Omoikane supports ritual and governance, and Ame-no-ishikadowake is stationed as the god of the gates, Ame-no-tajikarao is the power that supports the boundary transition when the sacred treasures descend from heaven to earth. The hand that opened the Heavenly Rock Cave is now added to the procession of sacred treasures descending from Takamagahara to Ashihara-no-nakatsukuni. Togakushi Shrine is a sacred site that transformed this mythological role into the shape of a mountain. According to its official history, Togakushi Shrine enshrines deities related to the Heavenly Rock Cave myth from Takamagahara, with Ame-no-tajikarao-no-mikoto enshrined at the Okusha, Ame-no-yagokoro-omoikane-no-mikoto at the Chusha, and Ame-no-uzume-no-mikoto at the Hinomiko-sha. This is a structure where the mythological casting is deployed across the five shrines of Togakushi. Furthermore, the legend that the rock door pushed open by Tajikarao-no-mikoto fell to the lower world and became Mount Togakushi connects the very place name "Togakushi" (hidden door) to the memory of the Heavenly Rock Cave. The door that opened for only an instant in the Kojiki remains as a mountain in Togakushi. Ame-no-tajikarao is also the god who converts unseen events in Takamagahara into a mountain worship practice that people can climb and visit. In modern times, it is natural, given the meaning of his name, that Ame-no-tajikarao is worshipped as a god of good fortune, fulfillment of wishes, bountiful harvests, and victory in sports. However, the power referred to here is not the power to simply pin down an opponent. In the story of the Heavenly Rock Cave, had he merely destroyed the door with sheer force, Amaterasu likely would not have returned. Only when wisdom, ritual implements, laughter, mirrors, and words are aligned, and Amaterasu herself turns her consciousness outward, does Ame-no-tajikarao's hand change the world. Therefore, praying to this god is not about wishing for a blind breakthrough, but rather praying for the power to take the final step without hesitation after all preparations are complete. There is a closed door. But at the same time, there is a power waiting before the door. Ame-no-tajikarao is the god of that quiet standby and the decisive hand.

  • Taira no Koremochi

    Taira no Koremochi

    Rare

    taira-no-koremochi

    The Yogo General Who Vanquished the Demoness Momiji

    Humanoid Yokai / Half-human Half-yokaiMt. Arakura, Togakushi, Shinano Province (Present-day Nagano Prefecture) / Bessho Onsen Kitamuki Kannon (Present-day Ueda City, Nagano Prefecture)

    Taira no Koremochi is an entity of the 'demon-slaying hero' archetype who stands not on the side of *yokai*, but on the side that strikes them down. Just as Sakanoue no Tamuramaro subdued Suzuka Gozen and Otakemaru, and Minamoto no Yorimitsu subdued Shuten-doji, Koremochi carved his name in lore as the one who vanquished the demoness Momiji of Togakushi. What makes him a hero is not pure military force, but the fact that the story weaves in 'the limits of human power'—he is initially defeated by Momiji's dark arts and can only conquer the demon after praying to buddhas and deities. The fascination of Koremochi's figure lies in the flexibility with which his protector swaps depending on the medium of the legend. In Noh it is Hachiman, in Bessho-lineage accounts it is Kitamuki Kannon—the same warlord is protected by different divinities depending on local faith and theatrical convenience. This implies that Koremochi is not an entity rigidly tied to a specific god, but rather a vessel carrying the archetype itself of 'the warrior who slays demons with divine protection'. While Kinasa reveres Momiji as a noblewoman, Koremochi is strictly a subjugator executing the orders of the center, and only by combining both does the dual nature of good and evil in the Momiji legend emerge. In this encyclopedia where *yokai* are the main characters, Koremochi is a rare subjugator included as a 'counterpart existence that makes the demon possible'.

  • Momijigari (The Demon of the Maple Viewing)

    Momijigari (The Demon of the Maple Viewing)

    Uncommon

    moh-MEE-jee-GAH-ree

    Demoness Momiji (Performing Arts Tradition)

    Oni and giant creaturesTogakushi Mountain, Shinano Province (Nagano), Japan

    A demoness archetype fixed in Noh, joruri, and kabuki from the Muromachi to Edo periods. She appears under the pretext of autumn leaf viewing as a courtly lady-in-waiting or princess’s attendant, lulling suspicion with music and dance. At the feast she inebriates warriors, but near midnight her nature is exposed by divine protection or a sacred blade, and she reveals her true form in the wilds of Mount Togakushi. Commonly called Momiji, she bears aliases such as Princess Sarashina depending on the work. Her slaying tales extol martial virtue and reflect awe of the mountains, inheriting Togakushi worship and the rhetoric of oni-hunting lore. On stage, the contrast between the elegant disguise of the first act and the ferocious demon visage of the second is emblematic.

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