Island Shika-no shima

Island Shika-no shima is a Fukuoka's leisure spot. The geological formation was very typical and interesting on the map. So, we decided to go there.
As the island was very small, we could drive around it easily. As the island was near the China continent, there were some ruins which be influenced by china. The board in the picture was the memorial board which showed the record of the war which an ancient China attacked Japan.