Borre mound cemetery are ancient Burial Mounds from the Viking period

burrial mound tumulus viking age vestfold county grave burried horse vikingera viking ship norsemen excavations barrow oppdal grass ancient cultural heritage archaeologist midgard tree viking central national heritage board borre national park colonization prehistoric era raids antiquarian norway historical discover raiders helmet history ceremony conquest borre odin sword research enemies death riding equipment brutal weapons harbour warrior trade thor friend jewelery