A very large wetland in Sudursveit and Mýrar, south-east Iceland. Habitats comprise extensive sedge marshes (Carex, Eriophorum), pools, sandy areas with rushes Juncus, mudflats and brackish lagoons. The main land-use is grazing.
Information on birds is limited, but the area is known to be important for breeding wildfowl and waders as well as for staging waterbirds.
BirdLife International (2020) Important Bird Areas factsheet: Hestgerdislón-Hornafjardarfljót. Downloaded from http://www.birdlife.org on 12/08/2020.