First archaeology park of Turkey, Aktopraklık Tumulus was discovered in 2002 during factory construction near gölyazı (apolyont) lake in Akçalar, Bursa, Turkey. Archaeological excavation started in 2004. History based on B.C. 6500 - 5500. The area was surrounded with a ditch that shows an authority in village. Normally, a ditch was digged to protect village from enemy or wild animals, but there is no data about battle.