In the 7th millennium BC, the area around Mount Olympus and the Pieria Mountains was settled, possibly from the east. The environment offered the settlers good living conditions, such as a mild climate, water, fertile farmland and hunting grounds. Finds from this period come from the area of Korinos, Ritini, Pigi Athinas and Makrygialos. Remains of settlements have been scarcely excavated, but found graves with various grave goods: stone and earthen figures, clay vessels, tools made of bone and stone, flint arrowheads and pieces of jewellery, which were made of bone or clay.