Kanmangafuchi Abyss

Kanmangafuchi Abyss is a gorge carved along the Daiya River by lava flows from an eruption of Mount Nantai roughly 7,000 years ago, its dark volcanic rock walls and swift rapids forming one of the natural landmarks that made Nikko's mountains a center of Shugendo mountain worship well before the founding of the area's major shrines and temples. The gorge is best known today for the Narabi Jizo, a row of stone Jizo statues, Buddhist guardian figures associated with travelers and children, that line the riverside path; the statues were placed by priests from Jiun-ji Temple beginning in the 17th century, during the Edo period, and their number has never been definitively counted, giving rise to local folklore that the statues themselves shift and cannot be tallied twice the same way. Many of the statues have lost their stone heads or bibs to erosion and flooding over the centuries, and some have been informally repaired or re-capped by visitors and caretakers, giving the row a weathered, accumulated character rather than a restored uniform appearance. The path follows the river gorge for about a kilometer, passing beneath cedar trees and past the volcanic rock formations exposed by the ancient lava flow, with interpretive signage explaining both the site's geology and the Jizo statues' religious function. Unlike the curated interiors of Nikko's shrine treasure halls, Kanmangafuchi is presented as an open, self-guided nature and pilgrimage walk, with no admission fee or fixed opening hours, reflecting its origin as a natural and devotional site rather than a constructed monument.