The cliffs are composed of two distinct layers of rock: a base of hard rock from the Neogene period and a softer sedimentary layer above.
A Buddhist shrine dedicated to Benzaiten, the Goddess of Water and Music, is located inside the sea cave.
During the Heian period, the caves were utilized by the Kumano Suigun naval force to hide their ships.
The site is officially designated as a 'Lover's Sanctuary' (Koibito no Seichi) by the NPO Regional Development Support Center.
The name Sandanbeki refers to the three-tiered appearance of the cliffs as viewed from the sea.
Sandanbeki Cliffs are 50-meter-tall precipitous rock formations composed of volcanic rock jutting into the Pacific Ocean. The site features an elevator descent to a sea cave complex located at the base of the cliffs. Historically, these caves served as a hideout for the Kumano Suigun, a group of powerful naval pirates. The cavern interior includes a recreated barracks and a dedicated shrine to Benzaiten, the deity of water. Coastal erosion has carved distinct geological patterns into the cliff face, making it a prominent example of coastal topography in the Yoshino-Kumano National Park. The clifftop observation deck provides panoramic views of the ocean horizon. The site is a registered 'Lover's Sanctuary' due to the dramatic setting and sunset vantage points.
The edge of the cliff observation area for a wide-angle shot of the vertical rock walls against the Pacific.
Wear sturdy, non-slip footwear as the cavern floor can be damp and uneven.
Check the weather conditions before visiting, as high waves or heavy winds may cause the elevator access to the caves to be suspended.
Bring a light jacket, as the temperature inside the sea cave is significantly lower than on the clifftop.
Do not venture past the safety railings on the clifftop, as the drop is unprotected and hazardous.
Access to the sea cave is occasionally suspended during severe weather or high storm tides.
Maintain silence inside the cavern shrine; do not touch the geological formations.
