Ookawa Stone Quarry 大川石丁場

Notice the holes in this rock that make a rectangular outline. They are called ya ana. It literally means "arrow holes" but they are actually holes for wedges. When they mined or split up stones they would first carve a series of these holes into the rock. Next they insert wedges into the holes and strike the wedges to split the rock.
More Photos
field of stones stone quarry road
large finished stone Bonaki Ishi
outline for a stone to split split stone
stone with wedge holes wedge holes
a corner of the quarry partly drilled wedge holes
sides chipped off a large stone large split stones
large stone with ya ana large split stones
large stone high up the hill partially finished stone
large stone and leavings carved family crest
owner's crest family crest and wedge hole marks
owner's mark on the bonaki ishi field of stone chips and leavings
stone leavings Split stone leavings
split on all sides pile of stone leavings
partly buried stone chips partly shaped stone
stone leavings stone leavings
stone leavings stone leavings