Batu Bolong is a pinnacle site in the Flores Sea, Indonesia. It lies within Komodo National Park and is reached by boat or liveaboard. It is rated a beginner site, with depth ranging from 5 to 30 metres and strong current present as a hazard. It is regularly named in rankings of top dive sites worldwide. Reef sharks and hawksbill turtles are resident. Giant trevally, humphead wrasse and nudibranchs are occasionally seen. Reef manta rays and spotted eagle rays are rare. Best months for diving run from May to October.