Langesjøen is a lake in the municipality of Nore og Uvdal in Buskerud, Norway. Langesjøen is located ln Hardangervidda. Djupa flows out of Langesjøen to form part of the Numedalslågen watershed (Numedalsvassdraget).Numedalsvassdraget (Store norske leksikon. Asbjørn Vinjar og Ragnar Heggstad)
See also List of lakes in Norway
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