Batu Bolong, Komodo: Diving Indonesia’s Best Wall

By Salah Teman · 5 August 2026

Batu Bolong is the dive most people remember from a Komodo trip. It is a single pinnacle in the channel between Komodo island and Tatawa, and only its tip breaks the surface. Everything that makes it extraordinary is underwater: the rock drops away as a near-vertical wall of hard and soft coral, and because the current splits around it, the sheltered face becomes a feeding station for an unusual density of fish.

Why Batu Bolong is dived on one side only

The channel funnels water past the pinnacle with real force. That current is what feeds the reef and keeps the coral in the condition it is in, but it also means the site is only dived on the lee side, and the safe side changes with the tide. Anchoring is not permitted here, so boats hold position and divers enter and exit directly.

This is why Batu Bolong is not a beginner dive. Divers need reliable buoyancy, a controlled descent, and the discipline to stay in the lee of the rock rather than drifting around the edge into the full flow.

What you see

The wall is thick with reef fish, and schooling surgeonfish and fusiliers gather in numbers that surprise even experienced divers. White-tip and grey reef sharks patrol the deeper section, giant trevally hunt along the drop, and turtles are common on the shallower shelf. The coral cover itself is the other attraction, and it is in better shape than most sites in the park.

Experience level

Advanced certification or equivalent logged experience in current is strongly recommended. If Komodo is your first liveaboard, we will usually build up to Batu Bolong across the first days of the trip rather than diving it on day one.

Conditions

Water temperature in central and north Komodo runs 26–30°C, generally warm and calm. A 3mm long wetsuit is the most versatile choice; bring a 5mm or a neoprene hoodie if you feel the cold. The Komodo season is June to September, departing from Labuan Bajo. Open Water divers are limited to a maximum depth of 18m by law and insurance.

Diving Batu Bolong with Teman

Batu Bolong features on our Komodo itineraries from 4 days upward. The KLM Teman carries 12 guests in 5 ensuite cabins with a crew of 10, which keeps group sizes small on a site where spacing matters.

More Komodo dive sites

• Castle Rock
• Crystal Rock
• Karang Makassar (Manta Point)
• Golden Passage
• The Shotgun

See all itineraries and dates on our Komodo liveaboard page.

Salah Teman

Salah writes for Teman Liveaboard, the owner-operator of the KLM Teman. The Teman is a 36-metre Indonesian phinisi, handbuilt in Sulawesi and launched in 2017, carrying 12 guests in 5 ensuite cabins with a permanent crew of 10 and a Cruise Director. The team behind her has more than 20 years sailing the Indonesian archipelago. The boat works Komodo National Park from June to September out of Labuan Bajo, Raja Ampat from November to April out of Sorong, and runs Banda Sea and Ring of Fire crossings between the two seasons. The dive site guides on this blog are written from the operator's own logs and itineraries, with conditions, seasons and equipment guidance checked against the dive team who work these sites every week. Where a detail depends on the day — depth on a given tide, or where a current will take you — we say so rather than guess, because that is a briefing the Cruise Director gives on the boat, not something a web page can promise.

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