The Røros Museum administers the collection of maps that belonged to The Røros Copper Works. The collection contains some 4.000 maps and drawings showing terrain, undergound mining plans, drawings of technical facilities and installations. The material dates from the latter part of the 1600s and up to 1977 when the copper works finally closed down. The collection of maps contains important documentation and is therefore an excellent source of material for those wishing to make knowledge of the past more readily understandable. The Museum has gained important practical information from this collection in its work for cultural heritage.