The first evidence of occupation in this area is found in the Grottes d'Arcy-sur-Cure, where paintings have been found dating back 28,000 years. The Palaeolithic hunter-gatherers of that time also left behind numerous flint artefacts. The area is believed to have been occupied for about 200,000 years. By 4000 BC, a wave of Neolithics arrived from the Danube River region of eastern Europe. They built substantial wooden houses and introduced pottery decorated with the characteristics of the Linear Pottery culture. Further waves of migrants followed, the Chasséen culture, and the Michelsberg culture.