Sarobetsu plain
, derived from the Ainu
Ainu language
Ainu is one of the Ainu languages, spoken by members of the Ainu ethnic group on the northern Japanese island of Hokkaidō....

 sar (marsh) and pet (river), is a coastal plain
In geography, a plain is land with relatively low relief, that is flat or gently rolling. Prairies and steppes are types of plains, and the archetype for a plain is often thought of as a grassland, but plains in their natural state may also be covered in shrublands, woodland and forest, or...

 and low-lying moor
Moorland or moor is a type of habitat, in the temperate grasslands, savannas, and shrublands biome, found in upland areas, characterised by low-growing vegetation on acidic soils and heavy fog...

 in northwestern Hokkaidō
, formerly known as Ezo, Yezo, Yeso, or Yesso, is Japan's second largest island; it is also the largest and northernmost of Japan's 47 prefectural-level subdivisions. The Tsugaru Strait separates Hokkaido from Honshu, although the two islands are connected by the underwater railway Seikan Tunnel...

, Japan
Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

. With an area of approximately 20,000 ha
The hectare is a metric unit of area defined as 10,000 square metres , and primarily used in the measurement of land. In 1795, when the metric system was introduced, the are was defined as being 100 square metres and the hectare was thus 100 ares or 1/100 km2...

, it forms part of the Rishiri-Rebun-Sarobetsu National Park
Rishiri-Rebun-Sarobetsu National Park
is a national park on the Rishiri Island, Rebun Island, coasts of Wakkanai and Wakkasakanai and Sarobetsu Plain and the north-western edge of Hokkaidō, Japan.-External links:*

, and its wetlands are a Ramsar Site
Ramsar sites in Japan
The Ramsar Convention is an international treaty for the conservation and sustainable use of wetlands. Adopted in 1971, it entered into force in 1975 and as of March 2011 has 160 Contracting Parties. Japan was the twenty-fourth party to accede, on 17 October 1980...

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