Sungai Batu Apoi is where Batu Apoi gets its name. Long ago, there was a Murut Longhouse there beside the river. Their myth states that a hot rock that was formerly upstream gave Batu Apoi its name. The presence of this rock rendered the entire area inhospitable and unusable to humans. . The village mosque is Kampong Batu Apoi Mosque. It was inaugurated on 4 September 1987 and can accommodate 200 worshippers.