Located south, just off the Rinkai inlet is a small islet 130 meters in length from north to south, 35 meters in width and 25 meters in height. The island’s offical name is Takashima. Because of erosion,the center of island has an opening that resembles the full moon. Today, because of this resemblance, people refer to the islet as the Engetsuto (Full Moon Island). During the summer and winter sunsets, the silhouette of the Engetsuto is an example of nature’s wonder and beauty.