 The most conspicuous sign of prehistoric human settlements are the famous paintings in the northern Spanish cave of Altamira, which were done c. 15,000 BC and are regarded as paramount instances of cave art.Furthermore, archeological evidence in places like Los Millares and El Argar, both in the province of Almería, and La Almoloya near Murcia suggests developed cultures existed in the eastern part of the Iberian Peninsula during the late Neolithic and the Bronze Age.Around 2500 BC, the nomadic shepherds known as the Yamna or Pit Grave culture conquered the peninsula using new technologies and horses while killing all local males according to DNA studies.