Lake Okushima

Located at the very back of Shima Onsen, Lake Okushima is a dam lake created by the Shima River Dam, with a circumference of 4km. The water here has a mysterious and mysterious blue color. Recently, it has been attracting attention as "Shima Blue." It is said that the clearer the water, the more it reflects the blue color, which is proof that the water is transparent. In addition to the beauty of this water, it is said that it looks blue because of the mixture of minerals and other components. This Shima Blue shows various expressions depending on the location, season, weather, and time of day. The blue is especially beautiful from April to May when meltwater flows into the lake, and you can see an even more beautiful color. It is also recommended to visit in the morning on a sunny day when the sun is shining on the lake surface. You can also enjoy canoeing on the lake surface. The autumn leaves at Lake Okushima are from mid-October to early November.