Archaeological research at Atapuerca indicates the Iberian Peninsula was populated by hominids 1.2 million years ago. In Atapuerca fossils have been found of the earliest known hominins in Europe, the Homo antecessor. Modern humans first arrived in Iberia, from the north on foot, about 35,000 years ago. The best known artefacts of these prehistoric human settlements are the famous paintings in the Altamira cave of Cantabria in northern Iberia, which were created from 35,600 to 13,500 BCE by Cro-Magnon. Archaeological and genetic evidence suggests that the Iberian Peninsula acted as one of several major refugia from which northern Europe was repopulated following the end of the last ice age.