Sarobetsu Plain

The Sarobetsu Plain (サロベツ原野), derived from the Ainusar (marsh) and pet (river), is a coastal plain and low-lying moor in northwestern Hokkaidō, Japan. With an area of approximately 20,000 ha or 200 km (77 mi), it forms part of the Rishiri-Rebun-Sarobetsu National Park, and its wetlands are a Ramsar Site.