Aoshima

Aoshima Devil's Washboard, Aoshima Devil Washboard

Aoshima is a small island nestled off-shore, just south of Miyazaki City, Miyazaki Prefecture. The subtropical island is most famous for a striking geological formation, known as the Devil’s Washboard, or Oni no sentakuita.This surreal landscape of evenly spaced, wave-like rock formations creates an otherworldly sight along the coastline.

Formed over millions of years of tectonic plate movements and tidal erosion, this unique rock formation connects the mainland of Kyushu, to the island of Aoshima. The Devil’s Washboard formation can be seen while the tide is low, and transitioning to/from high tide, but low-tide provides the best sense of scale. At high tide, most of the rock is submerged. The Aoshima Bridge provides a great place to view the rock formation from, allowing you can walk between the mainland and the island easily. 

According to local legends, the formations were used by oni (Japanese demons) to wash their clothes, hence the name “Oni no Sentakuita.”Another legend suggests that the ridges were created by the gods to help guide celestial beings to Aoshima Shrine, a sacred Shinto shrine located at the heart of the island. The shrine is said to bring blessings for love and relationships. 

Aoshima Shrine Torii Gate

Nearby, Miyazaki’s coastline is famous for its waves, making Aoshima a great spot for surfers of all levels. You can also find the Miyako Botanic Garden, only a few short minutes from the Aoshima bridge. The Miyako Botanic Gardens are free to visit, and are open from 8:30 am to 5:00 pm.

Hours and Admission

Accessing Aoshima

Take the JR Nichinan Line from JR Miyazaki Station to JR Aoshima Station (approx. 30 minutes). The island is a short walk from the station. This line is covered by the JR Pass, and is free for pass holders. Without the JR Pass, this will cost 380JPY one way. 

Aoshima is about a 30-minute drive from Miyazaki Airport, with parking available near the beach.

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Where to Stay

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Aoshima Grand Hotel

Aoshima Grand Hotel is a beachfront resort in Miyazaki, offering ocean views, onsen baths, and easy access to Aoshima’s attractions.

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Aoshima Guesthouse Hooju

Aoshima Guesthouse Hooju is a budget-friendly, cozy hostel near Aoshima Beach, popular with surfers and backpackers for its relaxed atmosphere.

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ANA Holiday Inn Resort Miyazaki

ANA Holiday Inn Resort Miyazaki is a beachfront hotel with ocean-view rooms, onsen baths, dining options, and direct access to Aoshima Beach.

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