[1] Orkjarve is a nature reserve situated in northern Estonia, in Harju County and it encompasses an area of 11.55 km².

Aude and Viisu mires are also part of the protected areas, and also have ecological importance.

[4] Managed by the Ministry of Environment, Narva Mnt 7a, Tallinn, Estonia.

Additionally, ombrotrophic mires are found in northern regions, characterized by nutrient-poor environments.

Bogs and fens in the nature reserve are key examples of peat-forming ecosystems.