2001 年 17 巻 p. 475-480
Restoration of coastal utilization type was carried out based on old photographs showing coastal hot spar in Beppu City in Oita Prefecture. This city has been historically famous for hot spar gushing out at the sandy beach. This hot spar was named ‘sand spar’ because people were buried under the surface of naturally heated sand. It was only used in low tide level. After the bath, they could bathe seawater at the shoreline. Now this type of natural recreation disappeared. In order to consider future coastal utilization of Beppu City, this information may give a new standpoint.