Further discoveries of Aboriginal rock carvings in Tasmania

The Remarkable Cave Area, south of Port Arthur on Tasman's Peninsula, now a tourist atJtraction, was once frequently visited by the aborigines. The locality is of interest geologically as the molten rock in the form of dolerite was forced into horizon­tal layers between the sedimentary rocks of Triassic Sandstone. This horizontal action formed a sill. At the same time some molten rock found its way into ve11tical cracks creating a dyke. The molten rock baked the sedimentary rock coming in contact with it causing it to be metamorphosed. It was this baked rock that the aborigines used for the manufac,ture of many of their artefacts.