Land area: 35,053 ha
Designated on 1 Feb, 1936
Mt. Daisen has a beautiful conic shape with its outline extending smoothly from the bottom on the coast to the top, but when viewing from the other side, it presents rugged, rocky crags. These two faces of the mountain, which is loved by many climbers, are both charming. In the Japan Sea, many volcanic islands, large and small, present magnificent or graceful landscapes. This is a park which has varied attractions of both mountains and the ocean.
Daisen-Oki National Park is the westernmost national park facing the Japan Sea on the main island. It consists of four areas: the area which includes Mt. Daisen (1,729 m), the highest peak in the west part of the main island, and Mt. Hiruzen (1,202 m) located in its southeast, the coastal area in the Shimanehanto Peninsula, the Okinoshima Islands area, and the enclave which contains Mt. Sanbesan.
Mt. Daisen has a very broad base and seen from the west, resembles the graceful cone of Mt. Fujisan. Therefore, it is also known as the "Hoki-Fuji", meaning Mt. Fujisan in Tottori. However, the north, south and east sides of the mountain are formed by rugged, steep cliffs. As the mountain is situated close to the Japan Sea, it looks higher than its actual height and all the more beautiful. Its beautiful figure is loved by many climbers and, along with the campground and ski resort at the base, attracts many visitors throughout the year. Mt. Hiruzen in the southeast of Mt. Daisen is a group of three new volcanoes. On the south side of the volcanoes extends a plateau 450 ? 700 m above sea level. In contrast with Mt. Daisen, it has fields of bamboo grasses which create a bright and pastoral atmosphere.
The Shimanehanto Peninsula has a submerged coast in the east and an elevated coast in the west. These are full of scenic spots along the coast such as sea cliffs and cave mouths. Besides natural scenery, the peninsula is rich in historic and cultural sites with the famous Izumotaisha Shrine listed first.
The Okinoshima Islands consist of more than 180 islands in varied sizes, lying from 50 ? 90 km north of the Shimanehanto Peninsula. They are divided into two major groups: the Dozen Group and Dogo. While Dogo is a single island, Dozen has three islands situated in a circle and smaller islands that dot around them. The islands were formed when calderas generated by volcanic activities sank beneath the sea. Many rough cliffs and caves can be seen on their coasts. In particular, Kunigakaigan Coast in Dozen is known for its magnificent view with steep, soaring sea cliffs 100 ? 250 m high.
Mt. Sanbesan at the west end of the park is located almost in the center of Shimane Prefecture. It is a gracefully shaped volcano with seven mountains surrounding the crater in a circle. At the foot of the volcano extend broad fields. It is a popular mountain resort and many people enjoy nature walks, mountain climbing, camping and skiing here.
Mt. Daisen has one of the largest beech (Fagus crenata) woods in western Japan, and there are some plants which have the word "Daisen" in their names. While the main vegetation in the coastal area of the Shimanehanto Peninsula is Japanese black pine (Pinus thunbergii) woods, some broad-leaved evergreen trees can also be seen. In the Okinoshima Islands, many broad-leaved evergreen trees such as Japanese chinquapins and evergreen oaks grow.
All mountain areas in the park abound in wild birds and Fumishima Island off the coast of Cape Hinomisaki in the Shimanehanto Peninsula is famous as a breeding ground for black tailed gulls. Another noteworthy organism is the Japanese giant salamander which lives in Mt. Hiruzen. It is an important unique endangered species.
The Izumotaisha Shrine and other cultural assets are also great attractions in the park. The beautiful, magnificent raised-floor construction of the shrine is very impressive. As there are many sites of historical events in the area, it has many places of historic interest.