Prehistoric period

　Approximately 25,000 years ago, during the late Paleolithic period when the northern hemisphere was covered by the last ice age, traces of the earliest human life in the Yamashiro area can be seen on the fans and terraces around the Kyoto basin.
　During the Jomon period, which is said to have begun around 16,000 years ago, the climate became warmer and wetter, pottery and bows and arrows were invented, and the range of food sources expanded. For this reason, village ruins remain scattered throughout the Yamashiro area.
　Full-scale rice cultivation took hold during the Yayoi period, which began approximately 3,000 to 2,500 years ago. The plains were turned into rice paddies, and agricultural villages were born in various places.