The nearly 6,500-year old Tolkuse Bog is the central, and
biggest, part of the Rannametsa-Soometsa landscape
reserve situated in the Pärnu lowlands in southwestern
Estonia. It has an area of 55 sq km, including 34.7 sq km of
low-lying marshes and 16.2 sq km of raised bog. It is unique in
Europe because it is one of few where a lagoon-type wetland
has developed to the raised bog stage.
For its plant cover and appearance (dozens of pools and
impenetrable mires) Tolkuse Bog is a typical representative of
large West-Estonian wetlands.