A large wilderness area between the upper courses of the Iijoki and Kiiminkijoki rivers, with well-developed aapa mires and a multitude of streams and rivulets. Interspersed amongst the peatlands are small islands of mostly primeval boreal forest containing large amounts of dead wood. The area remains predominantlyfree of human activity.
An important breeding area for boreal avifauna, and one of the best breeding sites in Finland for large, shy species such as Cygnus cygnus, Anser fabalis and Grus grus.
Pressure/threats to key biodiversity
The area is a candidate SAC.
National Partial International High5,980 ha of IBA covered by Strict Nature Reserve (Olvassuo, 5,980 ha). 8,483 ha of IBA covered by Peatland Reserves (Leväsuo-Kärppäsuo, 2,191 ha, Oravisuo-Näatäsuo-Sammakkosuo, 6,327 ha). 27,610 ha of IBA covered by Special Protection Area (Olvassuo).
BirdLife International (2020) Important Bird Areas factsheet: Olvassuo-Oravisuo-Näätäsuo-Sammakkosuo. Downloaded from
http://www.birdlife.org on 26/02/2020.