The picture is the Yayoi dwelling at Yoshinogari Ruins in Saga Prefecture.
The ruin is the biggest ruin in Japan.
But Kagoshima also had the similar history.
Yayoi Dwelling Site at Kagoshima City
This is the is ruin of dwelling site of Yayoi Period (BC300 – AD 300)
This dwelling site was discovered just after 1945 when Japan was defeated in World War 2.
This discovery encouraged Kagoshima people who were exhausted by the war.
You can visit the site at Ichinomiya Shrine at Kagoshima City.