Narvik, Beisfjord, Øvre Jernvann
Found via https://www.frankfallaarchive.org/prisons/zoschen-forced-labour-camp/#&gid=1&pid=4 where a photo is shown of Narvik camp:
and in "Narvik-Beisfjord-1942-engelsk.pdf".
Location
Yugoslavian memorial: 17.59923, 68.36850 Soviet memorial: 17.59753, 68.36778 Camp likely at 17.60014, 68.36822
More information and/or local research would be good.
Info, to be ordered
On July 20, 1942, 588 Yugoslav prisoners arrived at the camp at Øvre Jernvann. https://www.lovest.no/2-O/Narvik/Sev/Serberleiren/Serberleiren-E.html
Øvre Jernvann Camp: 17.94159, 68.50744 Øvre Jernvann Memorial: 17.9422, 68.51005 https://www.norgeskart.no/#!?project=norgeskart&layers=1003&zoom=14&lat=7602450.83&lon=620063.26&drawing=j_DGnXwB8ZGuWLUT3Z9E&markerLat=7602229.484751836&markerLon=620256.3611865238&p=searchOptionsPanel
Wikipedia puts it in the town of Beisfjord ([68°22'30"N, 17°36'0"E)