Things to do & seeGravtjern bathing place, TrøgstadCategoriesTo doGravtjern is located near Trøgstad fort with nice hiking trails and opportunities to see how an old defense facility is built. Exit just south of Skjønhaug center by Trøgstad village museum, RV 22. Popular swim spot. Adapted for the disabled. NearbyUnionsleden stage northern route Unionsleden stage 2, Askim - TöcksforsVärmlands län, ÅrjängUnionsleden stage 1, Moss - AskimViken, MossNordre turen väster