Much surviving prehistoric art is small portable sculptures, with a small group of female Venus figurines such as the Venus of Willendorf (24,000–22,000 BC) found across central Europe; the 30 cm tall Löwenmensch figurine of about 30,000 BCE has hardly any pieces that can be related to it. The Swimming Reindeer of about 11,000 BCE is one of the finest of a number of Magdalenian carvings in bone or antler of animals in the art of the Upper Paleolithic, though they are outnumbered by engraved pieces, which are sometimes classified as sculpture. With the beginning of the Mesolithic in Europe figurative sculpture greatly reduced, and remained a less common element in art than relief decoration of practical objects until the Roman period, despite some works such as the Gundestrup cauldron from the European Iron Age and the Bronze Age Trundholm sun chariot.