(Redirected from Østerdal)'Østerdalen' or 'Østerdal' is a valley and
traditional district in the eastern part of
Norway, consisting of the municipalities
Rendalen,
Alvdal,
Folldal,
Tynset,
Engerdal,
Tolga and
Os in the north,
Elverum,
Stor-Elvdal,
Trysil and
Åmot in the south.
The upper river valleys of Norwegian rivers have distinctive names which are vestiges of earlier cultural distinctions such as building styles, traditional clothing or bunad and domestic crafts. The upper valley of the Glomma is the Østerdal (literally Eastern Valley, the ''-en'' ending in Norwegian corresponds to the definite article ''the'' in English).
Østerdalene (Norwegian plural form) is the collection of valleys in the region, including the
Trysil valley,
Engerdal,
Rendal and
Glomdal.