Exploring Batu Bolong
1. Location & Overview
Batu Bolong means “Hollow Rock” in Bahasa Indonesian. It gets it name from the iconic arch on the western edge of the rock that has a large hole in the middle of it. Batu Bolong is regularly voted one of the world’s best dive sites – and with great reason too! This small rock protruding from the depths of the Lintah Strait doesn’t look like much from the surface, but once you sink below the surface another world comes to life!
Batu Bolong can be found in Central area of Komodo National Park and sits in the middle of the Lintah Strait between the island of Komodo, to the west, and Tatawa Besar, to the east. The Lintah Strait is a deep channel of water that has ferociously strong currents. The name Lintah means ‘leech’ as in years gone by boat captains would talk of the Strait ‘sucking’ the power out of their vessels as they found their engines to be no match for the powerful currents that run through here.
2. Topography & Depth
The pinnacle of Batu Bolong is haven for marine life in a body of water that offers depths to 90 + metres. Beneath the waves, Batu Bolong reveals a dramatic underwater landscape – often referred to as “fish soup” (not the edible kind!) due to the abundance of marine life that can be found here.
The rocky pinnacle is covered in hard and soft corals that are home to the millions of sea creatures that call this place their home!
3. Currents & Dive Strategy
Batu Bolong can also be known as “Current City” for good reason too. As the strong currents hit one side of this pinnacle the waters can loop back around to form eddies. Eddies create the whirlpool affect that can often be seen on the surface. When approaching Batu Bolong the current lines can run for kilometres and can look very daunting to the untrained eye.
We dive this site based on these current lines and what they are doing. As divers we always dive on the lee (protected side) of the pinnacle in between the current lines. The wider the current lines the more space we will have along the pinnacle.
As with all dives, but particularly important at this dive site, we encourage our divers to always stay behind their guides and at the same level as us. We know where the current lines run on this site by understanding the topography, reading the water movement, fish action and turbidity. Along with the muscle memory of having done many many many dives we have done here!!!
We prefer to dive Batu Bolong when we can see strong wide current lines that means we will have more space underwater. We head deep first, usually around the middle of the rock, and then zigzag our way back and forth across the lee side. The pinnacle is much wider underwater than it is at the surface!
Tips to Stay Safe:
4. Marine Life & Biodiversity
Batu Bolong is a living, breathing mosaic of marine life from the very big to the very small:
5. Ideal Conditions & Timing
Final Thoughts
Batu Bolong is not just a dive—it’s a live underwater symphony. Every moment brings something new: swirling schools, predatory drama, and breathtaking coral architecture. It’s complete sensory overload – in the very best possible way.
For those who respect the currents and come prepared, this “underwater city” will reward you with memories that will last a lifetime.
Quick Reference Table
| Feature | Details |
| Location | Lintah Strait, Central Komodo |
| Depth | 5 – 30 m (max up to 90 m) |
| Currents | Moderate to very strong Dive on the lee side |
| Marine Life | Everything!!! |
| Topography | Pinnacle, steep walls, slopes, deep gullies |
| Vis & Temp | Visibility ~ 15–30 m+ Temp ~ 24–29 °C |
| Best Time | April – Nov (peak June – Aug) |
