About four kilometers west of Storsätern in northern Dalarna lies a abandoned mountain farm called Valdalsbygget. Due to its closeness to the Norwegian border (100 meter) it draw Swedish border patrols attention. Probably because to look out for refugees, but no one knows for sure. What we do know is that in one of the houses entrance hall soldiers have carved/written small messages on the wall. Since the Germans invaded Norway in April 1940, Swedish border patrols were stationed along the border with Norway in the event of a German attack on Sweden.
Current status: Preserved (2018).
Location: 62°02'51.48"N 12°14'07.76"E
Get there: Car.
Follow up in books: Gilmour, John: Sweden, the Swastika and Stalin - The Swedish Experience in the Second World War (2011).
Although we don’t no anything about the messages written on the wall, they are traces from a war worth preserving.