A complex of five adjacent aapa mires lying between the lower courses of the Kemi and Tornio rivers. Wet bogs are most typical, but various kinds of mire are present ranging from poor fens to herb-rich grass swamps. Numerous stands of old coniferous forests are scattered amongst the mires. Lakes and rivers are scarce.
An important area for boreal avifauna.
Pressure/threats to key biodiversity
Part of the area is a candidate SAC.
National Partial International High7,823 ha of IBA covered by Peatland Reserve (Kilsiaapa-Ristivuoma, 7,823 ha). 7,744 ha of IBA covered by Special Protection Area (Kilsiaapa-Ristivuoma).