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Oni no Sentakuita (Devil's Washboard) (Miyazaki City, Miyazaki Prefecture)

2025 11/09
November 9, 2025
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Overview (history, characteristics, attractions)

"Devil's Washboard" is the name given to the unique reef pattern found on the coast around Aoshima in Miyazaki City. The rocks on the shore have been regularly cracked by ocean erosion and differences in the geological strata, creating rows of flat, washboard-like steps. This natural beauty, created over many years by the power of the waves and weathering, is popular for tourist photos and strolls, with the contrast between the sea and sky and the scenery reflected in the tide pools. Visiting this area, along with Aoshima Shrine and subtropical plants, allows you to experience the charms of both nature and culture.

Highlights

  • A coastline lined with washboard-shaped rocks: the steps and grooves become more visible at low tide, making for great photos.
  • Tide pools: You can observe small creatures and seaweed, and they are popular with families with children (please be mindful of etiquette when collecting them).
  • Combination with Aoshima: You can enjoy the scenery in combination with the approach to Aoshima, Aoshima Shrine, and the surrounding subtropical botanical gardens.
  • Sunrise and sunset: The silhouette of the coastline is beautiful, and the scenery changes with the morning and evening light, making this a great spot for photography.

Access (nearest station, transportation, etc.)

  • Train: The nearest station is Aoshima Station on the JR Nichinan Line (JR Kyushu). It is about a 10-15 minute walk from the station towards the coast and Aoshima.
  • Bus: Miyazaki Kotsu operates buses bound for Aoshima from within Miyazaki City. Operating times vary depending on the season, so it is recommended to check in advance.
  • By car: Approximately 15-30 minutes from central Miyazaki (depending on traffic conditions). There are paid and free parking lots around Aoshima, but it is recommended to arrive early as it can get crowded during the tourist season.
  • Walking: It is in the same area as Aoshima Shrine and Aoshima Subtropical Botanical Garden, so you can combine this with a walking tour.

Estimated stay (estimated time required)

  • Light viewing: 30 minutes to 1 hour (if viewing only the coastal rocks)
  • Leisurely stroll and photography: 1-2 hours (including observing tide pools and taking photos)
  • Combine sightseeing with the surrounding area: Half a day to a full day (including Aoshima Shrine, the Subtropical Botanical Garden, nearby cafes, and coastal walks)

Nearby spots

  • Aoshima Shrine (Aoshima) — A small shrine known for its love and protection of the sea. Accessible via a bridge.
  • Aoshima Subtropical Botanical Garden - A great place for a stroll, with an abundance of tropical plants.
  • Aoshima Beach — A popular sandy beach for swimming and walking (swimming is permitted depending on the season).
  • Phoenix Seagaia Resort — Hotels, resort facilities, golf courses, etc. (Accessible by car).
  • Miyazaki City Center — Enjoy shopping and gourmet food (chicken nanban, mangoes, etc.).

Things to be aware of (crowds, manners, seasonal precautions, etc.)

  • Be aware of the tide: The rock formations are easier to see at low tide, but may be submerged and invisible at high tide. For safety reasons, it is a good idea to check the low tide times in advance.
  • Slippery and Falling Caution: The rocks can be slippery due to seawater and algae, so wear non-slip shoes and watch your step when walking.
  • Protection and No Collecting: The natural landscape is fragile. Please respect etiquette by not taking rocks, shells or living creatures, or cutting or scraping them.
  • Weather and wave hazards: It is dangerous in rough weather and high waves. Stay away especially on typhoon or swell days.
  • Crowds: The area around Aoshima can be crowded during peak tourist seasons and on holidays. Be sure to secure parking and allow plenty of time.
  • Respect local rules: Aoshima Shrine is a place for worshippers. Please observe proper etiquette and take your trash home with you.
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