The kentungan, also spelled kentongan, is a traditional Indonesian slit drum carved from bamboo or wood and struck to send signals across a village. For generations it has been used during ronda night patrols, to warn of danger, announce deaths, or call residents to gather for communal work. Its distinctive hollow knock carried far before phones and loudspeakers were common. Online, recordings like this one circulate as a ready sound effect for editors who need an unmistakably Indonesian cue for performances, patrol scenes, and cultural storytelling.