is a

Quaternary The Quaternary ( ) is the current and most recent of the three periods of the Cenozoic Era in the geologic time scale of the International Commission on Stratigraphy (ICS). It follows the Neogene Period and spans from 2.58 million years ...

stratovolcano A stratovolcano, also known as a composite volcano, is a conical volcano built up by many layers (strata) of hardened lava and tephra. Unlike shield volcanoes, stratovolcanoes are characterized by a steep profile with a summit crater and per ...

located off the coast of

Hokkaidō is Japan's second largest island and comprises the largest and northernmost prefecture, making up its own region. The Tsugaru Strait separates Hokkaidō from Honshu; the two islands are connected by the undersea railway Seikan Tunnel. The la ...

Japan Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north ...

in the

Sea of Japan The Sea of Japan is the marginal sea between the Japanese archipelago, Sakhalin, the Korean Peninsula, and the mainland of the Russian Far East. The Japanese archipelago separates the sea from the Pacific Ocean. Like the Mediterranean Sea, it h ...

. It rises out of the

forming

Rishiri Island is a high island in the Sea of Japan off the coast of Hokkaido, Japan. Administratively the island is part of Hokkaido Prefecture, and is divided between two towns, Rishiri and Rishirifuji. The island is formed by the cone-shaped extinct ...

. Because its cone shape resembles

Mount Fuji , or Fugaku, located on the island of Honshū, is the highest mountain in Japan, with a summit elevation of . It is the second-highest volcano located on an island in Asia (after Mount Kerinci on the island of Sumatra), and seventh-highest p ...

it is sometimes referred to as Rishiri Fuji. It is one of the 100 famous mountains in Japan. Mount Rishiri's opening festival is held annually on July 2 and July 3. This festival officially opens the climbing season.

Geology

Mount Rishiri is made up of

alkali In chemistry, an alkali (; from ar, القلوي, al-qaly, lit=ashes of the saltwort) is a basic, ionic salt of an alkali metal or an alkaline earth metal. An alkali can also be defined as a base that dissolves in water. A solution of a ...

and non-alkali

mafic A mafic mineral or rock is a silicate mineral or igneous rock rich in magnesium and iron. Most mafic minerals are dark in color, and common rock-forming mafic minerals include olivine, pyroxene, amphibole, and biotite. Common mafic rocks include ...

volcanic rock Volcanic rock (often shortened to volcanics in scientific contexts) is a rock formed from lava erupted from a volcano. In other words, it differs from other igneous rock by being of volcanic origin. Like all rock types, the concept of volcanic r ...

dating from the

Late Pleistocene The Late Pleistocene is an unofficial Age (geology), age in the international geologic timescale in chronostratigraphy, also known as Upper Pleistocene from a Stratigraphy, stratigraphic perspective. It is intended to be the fourth division of ...

, 130,000–18,000 years ago. Otherwise it is covered in

volcanic rock debris.

Climbing route

The ascent of Rishiri is not suitable for novice hikers, because it is challenging in places. There is a campsite partway up the mountain from the dock, and an unmanned hut located a short distance below the summit. There is also a small shrine at the summit. On clear days the view extends to Hokkaidō, the adjacent island of Rebun, and as far as

Sakhalin Sakhalin ( rus, Сахали́н, r=Sakhalín, p=səxɐˈlʲin; ja, 樺太 ''Karafuto''; zh, c=, p=Kùyèdǎo, s=库页岛, t=庫頁島; Manchu: ᠰᠠᡥᠠᠯᡳᠶᠠᠨ, ''Sahaliyan''; Orok: Бугата на̄, ''Bugata nā''; Nivkh: ...

Island in

Russia Russia (, , ), or the Russian Federation, is a List of transcontinental countries, transcontinental country spanning Eastern Europe and North Asia, Northern Asia. It is the List of countries and dependencies by area, largest country in the ...

In popular culture

The package of

Shiroi Koibito is a European-style cookie manufactured and sold by Japanese confectionery maker Ishiya Co., Ltd. in Sapporo, Hokkaido. It consists of chocolate sandwiched between langue de chat. There are two main types: Shiroi Koibito White with white chocol ...

includes a picture of Mount Rishiri arranged in the centre.

Gallery

File:Rishiriislandairplane.jpg,

File:130726 Mount Rishiri view from Oshidomari Port in Rishiri Island Hokkaido Japan01s5.jpg, Mount Rishiri view from Oshidomari Port File:Mt. Rishiri peak.JPG, The summit of Mt. Rishiri taken from just below

References

External links

Rishirizan
- Japan Meteorological Agency * - Japan Meteorological Agency

- Geological Survey of Japan * Mountains of Hokkaido Stratovolcanoes of Japan Volcanoes of Hokkaido Highest points of Japanese national parks Pleistocene stratovolcanoes Holocene stratovolcanoes {{Hokkaido-geo-stub fr:Rishiri