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Miyako

Maō no Kyūden (Devil's Palace, Shimoji)

  • Max depth27 m
  • CertificationOpen water / no overhead
  • Water temperature≈ 20–29 °C, varies with the seasonestimated, no reports yet

The dive

One of Shimoji's best-known hall dives.

Moderate to strong current; a deep average depth, so watch your gas.
Profile and sections
Depth and profile
To 25–27 m: three connected halls ('entrance hall, main hall, bedroom') joined by a corridor, with skylights in every hall.
Configuration
Cavern with daylight; a torch helps (estimate).
Who can dive where
  • CaveAt least Open water / no overhead
  • Whole caveConfigurations: Backmount / twinset / Sidemount / CCR / Small cylinders / no-mount (speleo sumps)
  • Whole caveGoes down to 27 m (trimix or deco may be needed) · doesn't decide who may dive
Entry or dive feeThrough a dive centre or guide

This is how the planner decides who in your team may dive this cave. Rules your own trip adds (organizer, a mail, the AI) show with your trip.

How to get there

Boat dive off Shimoji with a local dive centre; Advanced Open Water.

Plan your route ↗

Around Maō no Kyūden (Devil's Palace, Shimoji)

Going to Miyako with your team?

Marcel finds the sites that match your team's certifications.

Plan a trip
Something wrong, or do you know more?Depth, access, parking, the current situation: let us know.
Sources, sharing and disclaimer

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Certification requirements, configurations and trimix depths are estimates for planning. Always check them locally and dive within your training. Compiled from web research (Oct 2026): ja.wikipedia, showcaves.com, the dive centres' websites (BIGHOLIDAY, Sun Island, Aquatic Adventure), visitokinawajapan.com, nap-camp, skyticket, the prefectural Miyako hospital, Ryukyu Shimpo and DAN. Toriike pin from Wikipedia; the boat sites have none. These are guided boat dives into caverns, halls and arches; the requirements come from the dive centres. Certification and configurations are estimates.