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Palau · about 36 km from Koror

Blue Holes (Palau)

  • Max depth42 m
  • CertificationOpen water / no overhead

What it looks like

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Videos and posts

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Other people's footage, not advice: how someone else dives here says nothing about what suits your team. Dive within your training.

The dive

The current is mild to moderate, calmer than at Blue Corner. Practical: the pin on the map comes from PADI and is approximate.

On the north side of the cavern a narrow entrance at ~-24/-27 m leads into a larger cave, the 'Temple of Doom': only for divers with a cave certification and the right equipment. Divers have died there.
Profile and sections

The current is mild to moderate, calmer than at Blue Corner.

Practical: the pin on the map comes from PADI and is approximate.

Depth and profile
Four connected vertical sinkholes 10–15 m across, with openings at 5–10 m; the floor of the cavern lies at 30–40 m and the large opening in the reef wall runs from -26 to -42 m (Fish 'n Fins); average 15–25 m. Short swim-throughs between the holes.
Configuration
Large cavern with daylight from above: recreational gear (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 42 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 on the reef plateau next to Blue Corner, with a local dive centre; often combined with Blue Corner.

Plan your route ↗

Around Blue Holes (Palau)

FillsNo fill station known nearby
Where to sleepAround Koror on Booking.com ↗

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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): the websites of Palau Dive Adventures (2014) and Fish 'n Fins (© 2023), PADI (Blue Holes, with pin), Bluewater Dive Travel, Koror's Rock Islands act and bill L.B. 9-46 (2011), dive centre and resort pages on the permit and Undercurrent (2012) on the chamber. Chandelier Cave and Siaes Tunnel have no published pin. These are guided boat dives into caverns and a tunnel; the requirements come from the dive centres. Certification and configurations are estimates.