S P O T ／ SPOT-042

Onigajō (Demon's Castle Sea Caves)

鬼ヶ城おにがじょう

For one kilometer along the Pacific coast south of Kumano City, the sea has spent several million years carving the sedimentary cliffs into a succession of caves, arches, overhangs, and sea stacks whose vertical walls are striated in horizontal bands like a geological textbook illustration. The Onigajō ("Demon's Castle") is the name given to the entire formation, based on the tradition that this coast was the stronghold of the pirate-warlord Tagazaru, whose subjugation by the general Sakanoue no Tamuramaro was reframed in legend as a battle against demons. A coastal walkway threads through the cave system, passing under arches where the ceiling is perforated by sea-carved holes that frame oval windows of sky. The effect — of walking through the interior of a geological process that is still, technically, ongoing — is of the specific kind of awe that has nothing to do with human achievement. The site is part of the Kumano Kodō UNESCO World Heritage zone, and remains significantly less crowded than its quality warrants.