The northern part of the province lies within the Scandinavian mountain range: mountainous country with many glacier-created lakes. The southern part consists of plains, with several mines, most notably copper, traditionally forming part of Bergslagen.
Highest point is Storvätteshågna, 1,204 meters above sea-level. Lowest point is at 55 meters, in the south-east part.
Lake Siljan features in the middle part of Dalarna, and the Västerdal River and Österdal River join the Dal River. Dalarna’s second lake is Runn, which lies between Falun and Borlänge. With 66.6 square kilometres (25.7 sq mi) of water and over fifty islands, the lake is a popular tourist destination.