Batu Bolong is Komodo's famous hollow-rock pinnacle between Tatawa Kecil and Komodo Island, rising from a tidal channel where the reef top, walls, and blue water all change fast with the current. The site is known for strong flow, a sheltered lee side on the right tide, and hard coral that supports dense schools of reef fish, so it is best planned as a guided boat dive with slack-tide timing and careful buoyancy.