Many carved tombs and burial chambers dot the granite boulders of the landscape around Marvão, suggesting small-scale farming settlements, and some cultural emphasis on burial rites and the afterlife. Excavations of dolmens (e.g. the Cavalinhas dolmen) reveal foetal-position buried skeletons, and grave goods including weaponry (axes, arrowheads), jewellery (necklaces), ceramics and stone idols. Cave art and engravings in the Tagus valley (40 km (25 mi) north of Marvão: 40,000 items) point to a developed culture based on prehistoric norms of agriculture, hunting and transhumance.