Arkeologisk undersökning, Tierps socken, Uppland 2003

Hennius, Andreas

A 4712 tar valley, long profile On the occasion of the construction of a new road E4 through Uppland, the Upplandsmuseet carried out archaeological studies of a large number of remains after coal and tar production in the northern Uppland forest. The fact that coal and tar production remains under investigation by archaeologists is unusual. In the context of Archaeology E4 Uppland, however, we were given the opportunity to attack this type of facility in a large-scale manner. In 2003 eleven tar production plants, 33 coal bottoms, seven coal oils, and a large number of routes with different degrees of ambition were examined. Some facilities were excavated and the rest were mapped and described. Through the large-scale approach we also had an opportunity to compare excavation methods and the results of different types of science analysis in a previously unimplemented way. The results of the 2003 studies underline the importance of exploring cultural historical remains also in woodland. A lot of new information has emerged that reflects the potential of woodland in archaeological research. A large-scale landscape exploitation in which forest products have been an important part of the supply from prehistoric times to today. The place at Raä 421: 1 named P60 in the report