Many structures and relics throughout the Yayoi period (3rd century B.C.-3rd century A.D.) have been discovered in Yoshinogari ruins.
Japan was thousands of years behind Europe and China in the cultivation of rice and centuries behind in the use of bronze and iron. These metals and rice cultivation seem to have been introduced to Japan in the Early Yayoi period, though nothing written remains now as they did not have letters at that time.
Yoshinogari had developed into the largest moated settlement in Japan during the Late Yayoi period (1st century A.D.-3rd century A.D.). It had an area of 40 square kilometers surrounded by a large “V-shaped” outer moat.
photo: Saga Prefectural Board of Education
photo: Saga Prefectural Board of Education
photo: Saga Prefectural Board of Education
You can see the reconstruction of this settlement and find their way of life when you visit this historical park. It is in Saga Prefecture. It takes about 1 hour from Fukuoka City by train.