Shield bosses were placed at the centre of round shields and were originally intended to deflect the blows to the shield. They become more elaborate over time and eventually become more of a decorative feature. Such shields have been largely recovered from European Bronze Age graves. Burial customs and grave goods were of great importance across Bronze Age Europe. It is in graves that many of the most impressive and interesting Bronze Age items have been found, as the Bronze Age saw a rise in individual graves which they filled with precious items.