Blanket bog or
blanket mire, also known as
featherbed bog, is an area of
peatland, forming where there is a
climate of high
rainfall and a low level of
evapotranspiration, allowing
peat to develop not only in wet hollows but over large expanses of undulating ground. The blanketing of the ground with a variable depth of peat gives the habitat type its name. Blanket bogs are found extensively throughout the
northern hemisphere - well-studied examples are found in
Ireland and
Britain, but vast areas of the
Russian and
North American tundra also qualify as blanket bogs.