Onigajō, Natural monument at Kumano Coast, Japan
Onigajō is a natural monument along the Kumano Coast featuring dramatic cliffs with numerous caves and unusual rock shapes created by waves and geological forces. The coastal formation displays layered rock structures and extends across a considerable stretch of shoreline.
The site held military importance during medieval times and served as a base for commanders. A fortress was built on the cliffs in the 1500s but was eventually abandoned.
The site connects to the legend of general Sakanoue no Tamuramaro, who reportedly used these cliffs as a base to defeat the pirate Tagamaru during the Heian period.
You can reach the cliffs on foot using a walking trail that starts from a visitor center with parking facilities. Sturdy shoes are helpful for navigating the uneven paths along the coastline.
The cliff faces display a distinctive honeycomb pattern created by wind and water erosion over time. The cave openings vary in size and shape, resembling bird beaks in a way that gives the place its memorable character.
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