Religion Shugendō (修験道)

The term shugendō is usually interpreted as "the way of cultivating spiritual power through practice." The word shugen itself derives from ideas such as "practice and verification" or "training and realised efficacy." In Shugendō thought, rigorous discipline reveals the innate Buddha-nature obscured by worldly attachments. Mountain training was therefore not simply an act of endurance, nor merely a mystical retreat. It was understood as a practical religious path through which the practitioner purified the body and mind, accumulated spiritual merit, and acquired genriki (験力), a form of miraculous or numinous power believed to heal illness, perform divination, ward off calamity, or assist local communities.

Origins and Early Development

The roots of Shugendō lie in Japan's ancient mountain worship traditions. Long before the arrival of Buddhism, mountains, forests, waterfalls and unusual rock formations were revered as places inhabited by kami and spirits. Sacred mountains were regarded as liminal spaces standing between the human world and the world of the dead, deities and unseen forces. These indigenous beliefs later merged with Buddhist cosmology and ritual, especially the esoteric traditions of the Tendai and Shingon schools. Daoist influences also entered the tradition, including ritual formulae, ideas of spiritual power and cosmological symbolism.

Shugendō gradually took shape during the Asuka and early Heian periods. Buddhist monks and lay practitioners increasingly withdrew into mountainous regions to perform austerities, meditation and magico-religious rites. The rise of esoteric Buddhism under Kūkai (空海, 774–835), founder of Shingon Buddhism, and Saichō (最澄, 767–822), founder of Tendai Buddhism, accelerated this process. Both traditions emphasised mountain training and ritual discipline, and many followers adopted ascetic practices in remote landscapes.

By the late Heian period, Shugendō had become closely associated with pilgrimage networks connected to Kumano, Yoshino and other sacred mountain regions. Imperial and aristocratic pilgrimages to the Kumano shrines helped transform mountain asceticism into a broader religious movement with national influence.

En no Gyōja and Mountain Asceticism

Tradition attributes the origins of Shugendō to En no Gyōja, also known as En no Ozunu or En no Gyōja (役行者, c. 634–c 701), a semi-legendary ascetic said to have practised austerities in the Katsuragi mountains during the late seventh century. According to later tradition, he acquired supernatural powers through severe ascetic discipline and established training grounds across numerous sacred mountains. Although the historical details of his life remain uncertain, he became venerated as the founder of Shugendō.

Later tradition held that En no Gyōja remained a lay practitioner throughout his life, a detail sometimes interpreted as reflecting Shugendō's comparatively flexible attitude toward clerical status. In the Katsuragi mountains, twenty-eight sacred training sites known as the Katsuragi Nijūhasshuku (葛城二十八宿) became associated with his practice. These sites were symbolically linked to the twenty-eight chapters of the Lotus Sutra.

Mountain austerities undertaken by yamabushi were intended not merely to test endurance, but to transform the practitioner spiritually through direct engagement with dangerous and sacred landscapes. Isolation, fasting, exposure to the elements, ritual recitation and movement through mountains all formed part of this discipline.

Sacred Mountains and Pilgrimage

Sacred mountains formed the geographical and spiritual centre of Shugendō. Practitioners believed that mountains functioned as living ritual landscapes inhabited by kami, buddhas and spiritual forces. Training routes often passed through caves, cliffs, waterfalls, and forests, which were understood to possess religious significance.

Among the most important centres were Yoshino and the Ōmine Mountains in present-day Nara Prefecture, as well as the Kumano region of the Kii Peninsula. Pilgrimage routes connecting these areas eventually developed into major centres of Shugendō practice. The Kumano Sanzan (熊野三山) — Kumano Hongū Taisha, Kumano Hayatama Taisha and Kumano Nachi Taisha — became especially important during the late Heian period as imperial pilgrimage destinations.

Other important Shugendō mountains included the Dewa Sanzan in Yamagata Prefecture, Mount Hiko in Kyūshū, Mount Ontake in Nagano, Mount Fuji, Mount Hakusan and Mount Tateyama. Some developed extensive institutional networks, while others remained more loosely organised centres of pilgrimage and local worship.

Yamabushi and Shugendō Practice

The practitioners of Shugendō are generally known as yamabushi (山伏), literally "those who lie down in the mountains," or shugenja, "practitioners of ascetic discipline." Historically, yamabushi acted not only as mountain ascetics but also as ritual specialists serving local communities throughout Japan. They conducted prayers, healing rites, divination and ceremonies intended to bring worldly benefits or avert disasters.

Training typically involved demanding physical and ritual practices conducted deep in mountainous terrain. These included fasting, meditation, chanting sutras and mantras, standing beneath waterfalls for purification, abstention from grains, ritual repentance and participation in sacred fire ceremonies known as saitō goma. Practitioners also undertook extended mountain-entry rituals known as nyūbu (入峰).

Mountain training routes contained ritual sites known as gyōba (行場), where practitioners stopped to perform austerities. Many of these sites were caves, cliffs or waterfalls associated with particular deities or cosmological meanings. Shugendō practice placed a strong emphasis on embodied movement through the landscape rather than on purely doctrinal study.

Rituals, Doctrine and Spiritual Power

Shugendō doctrine developed from a wide range of influences rather than from a single canonical system. Buddhist concepts, especially those associated with esoteric Buddhism, served as the doctrinal foundation for many rituals. At the same time, the tradition retained strong connections to indigenous mountain worship and kami veneration.

A central goal of Shugendō practice was sokushin jōbutsu (即身成仏), attaining buddhahood in this very body. Practitioners believed that severe discipline could reveal the innate Buddha-nature hidden beneath worldly attachments. The acquisition of spiritual efficacy, or genriki, was regarded as evidence of successful training.

Mountain-entry rituals were often interpreted symbolically as passage through the ten realms of existence within Buddhist cosmology. By traversing these realms spiritually and ritually, practitioners enacted a cycle of death and rebirth leading toward enlightenment.

Shugendō also developed elaborate ritual systems connected to goma fire ceremonies, initiations and esoteric transmissions. Certain traditions associated with pillar symbolism and cosmic harmony, known as chūgenhō (柱源法), remained highly secret and were transmitted orally within specific lineages.

Honzan-ha and Tōzan-ha

By the medieval period, Shugendō had developed into two principal branches. The Honzan-ha (本山派), primarily associated with Tendai Buddhism, centred on Shōgoin in Kyoto and maintained strong ties to the Kumano pilgrimage traditions. The Tōzan-ha (当山派), associated with Shingon Buddhism, centred on Daigōji's Sanbōin and focused particularly on the Ōmine mountain range.

The Honzan-ha gradually established a nationwide organisational structure through networks of temples and parish territories known as kasumi. Its authority rested heavily on Shōgoin and its affiliated institutions. The Tōzan-ha developed a looser structure based on regional sendatsu leaders and temple networks linked to Sanbōin.

Regional branches also emerged throughout Japan, including Haguro Shugendō in the Dewa mountains and traditions centred on Mount Hiko, Nikkō and other sacred mountains.

Shugendō in the Edo Period

During the Edo period, the Tokugawa shogunate increased supervision over religious institutions while simultaneously attempting to suppress Christianity. In 1613, the shogunate issued the Shugendō Hatto (修験道法度), formally recognising both the Honzan and Tōzan branches and requiring independent practitioners to affiliate with one of them.

The period also saw increasing institutionalisation. Ranking systems based on the number of completed mountain-entry rituals became common, and large temple networks supervised practitioners nationwide. At the same time, some mountain practices became increasingly formalised and less physically demanding than in earlier centuries.

Village yamabushi nevertheless continued to play important roles in local religious life. Many managed shrines as bettō, conducted healing rites and provided ritual services for ordinary communities. Their activities sometimes brought them into conflict with other Buddhist institutions or with Yoshida Shintō authorities.

Shinbutsu Bunri and the Meiji Suppression

The Meiji Restoration brought the greatest crisis in Shugendō's history. In 1868, the new government introduced the Shinbutsu Bunri (神仏分離) policies, separating Buddhism and Shintō as part of the construction of State Shintō. Shugendō, deeply rooted in the fusion of kami worship and Buddhist ritual, proved difficult to categorise.

In 1872, the government officially prohibited Shugendō. Many yamabushi were forced to abandon their status and return to lay life. At the same time, numerous temples, ritual objects and sacred sites associated with Shugendō were destroyed or reorganised during the anti-Buddhist movement known as haibutsu kishaku. Several mountain cult organisations survived by reshaping themselves as Sect Shintō movements, including Fusō-kyō, Jikkō-kyō and Ontake-kyō.

Revival After 1945

Following Japan's defeat in the Second World War, the restoration of religious freedom allowed Shugendō organisations to re-emerge publicly. The Religious Corporations Ordinance of 1945 enabled former Shugendō groups to reorganise independently from the Buddhist institutions under which they had previously operated.

Former members of the Honzan-ha established organisations such as Honzan Shugenshū, while Tōzan-affiliated practitioners reorganised under several groups, including Shingonshū Daigo-ha. Kinpusenji on Mount Yoshino declared the formation of the Ōmine Shugenshū in 1948, which was later renamed the Kinpusen Shugen Honshū. Training practices at sites such as Shōgoin and the Ōmine mountains gradually resumed.

Shugendō Today

Although far smaller than in the medieval or early modern periods, Shugendō remains active in contemporary Japan. Mountain ascetic practices continue at sites such as Yoshino, Ōmine, Kumano, Dewa Sanzan and Mount Ontake. Some organisations maintain highly traditional training systems, while others now offer introductory experiences to the public.

In 2004, the Sacred Sites and Pilgrimage Routes in the Kii Mountain Range were designated a UNESCO World Heritage Site. The designation recognised not only the region's natural beauty but also the continuing religious traditions associated with Shintō, Buddhism and Shugendō. Pilgrimage routes and ritual practices linked to Kumano, Yoshino and Kōyasan continue to attract practitioners and visitors from both Japan and abroad.

Legacy and Cultural Influence

Shugendō has had a lasting influence on Japanese religious culture, folklore and sacred geography. The image of the yamabushi became deeply embedded in literature, theatre and popular tradition, while mountain pilgrimage networks shaped patterns of travel and worship across the country. Many sacred mountains associated with Shugendō remain important religious centres today, even where formal Shugendō institutions disappeared during the Meiji period.

Modern scholarship increasingly interprets Shugendō not simply as a mystical mountain cult, but as a tradition centred on embodied practice, sacred geography and ritual movement through landscape. This emphasis on direct physical engagement with mountains continues to distinguish Shugendō within the wider history of Japanese religion.

Links:

• Shugendō (Encyclopedia of Shinto, Kokugakuin University)
• Path to Mystic Power Via Ascetic Practices (Japanese Buddhist Statuary)

References:

• Earhart, H. Byron, A Religious Study of the Mount Haguro Sect of Shugendō: An Example of Japanese Mountain Religion. Tokyo: Sophia University Press, 1970.
• Earhart, H. Byron, Japanese Religion: Unity and Diversity. 4th ed. Belmont, CA: Thomson Wadsworth, 2004.
• Miyake, Hitoshi, Shugendō: Essays on the Structure of Japanese Folk Religion. Edited and translated by H. Byron Earhart. Ann Arbor: Centre for Japanese Studies, University of Michigan, 2001.
• Miyake, Hitoshi, The Mandala of the Mountain: Shugendō and Folk Religion. Translated by Gaynor Sekimori. Tokyo: Keio University Press, 2005.
• Reader, Ian and George J. Tanabe Jr., Practically Religious: Worldly Benefits and the Common Religion of Japan. Honolulu: University of Hawai'i Press, 1998.
• Sekimori, Gaynor, 'Shugendō: The State of the Field', in Paul L. Swanson and Clark Chilson (eds.), Nanzan Guide to Japanese Religions. Honolulu: University of Hawai'i Press, 2006, pp. 207–234.
• Tyler, Royall, The Miracles of the Kasuga Deity. New York: Columbia University Press, 1990.