Miyajima-numa is, Sapporo from northeast to approximately 45 km, Bibai City's western end at is located.
Marsh's west side on the Ishikari River flows, its beyond on the Kabato's mountains stretch.
Marsh's surroundings in the, vast rural area spreads.
Miyajima-numa is, 2002 year November in, "internationally important wetland" as, Ramsar Convention in was registered.
Hokkaido in the, Lake Utonai and Kushiro Wetlands etc., 12 places of Ramsar Convention wetlands exist (nationwide in the 33 places).
Ramsar Convention refers to, wetland and there in live living things to protect for the purpose of, international treaty is.