A trial excavation conducted on the eastern slope of Kaizer Hill, Modi‘in, uncovered anthropogenic bedrock markings, possibly related to flint quarrying activity, and a Pre-Pottery Neolithic A (PPNA) flint industry. Four natural rock steps of limestone bedrock were exposed, and flint items were systematically collected. On the surface and edges of the rock steps, dense concentrations of bedrock cupmarks were documented, probably the result of the extraction of flint nodules.