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Yoshino Kumano NP, Wakayama
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Local tradition says Kumano naval forces hid boats in the wave-carved cave during the Genpei War. Inside, visitors can see a recreated guardhouse—bringing the old hideout story right down to the water’s edge.
About 16 million years ago, this was pebbly seabed. Tectonic uplift raised its sandstone, then waves and weathering carved the 40–50-meter wall: an ancient seafloor transformed into today’s dramatic coast.
Lead, zinc, and copper were mined here from the late Muromachi period until the 1950s. Metal-rich seepage also leaves parts of the sandstone stained yellow and brown—a colorful clue to the geology beneath your feet.
Sandanbeki may not mean “three-tiered wall”: Wakayama Prefecture says the name is thought to come from “midan,” a lookout where fishers watched passing ships and schools of fish below.
An elevator descends about 36 meters to a sea cave formed by wave erosion. Its roughly 200-meter passage brings visitors close to the surf—while waves continue to shape the rock around them.
Deep inside the sea cave, Muro Dai Benzaiten is enshrined beneath hanging votive lanterns. Here, a place of worship sits alongside the roar of waves breaking against the rock.
In 2016, Sandanbeki hosted Japan’s first Red Bull Cliff Diving World Series event. Competitors plunged from a platform 28 meters above the sea—about the height of an eight-story building.
Artists had depicted Sandanbeki as a celebrated view since the Edo period. In 2017, it was added to the national scenic designation that already included nearby Engetsuto Island and Senjojiki.
In 2016, Sandanbeki was selected as a “Lovers’ Sanctuary.” The local celebration brought a heart-shaped monument for love-locks—and a bright pink postbox—to the viewpoint.
