Copper-alloy, gilt, 1.65 grams, 16.68 mm. 6th-7th century AD. A finely detailed pendant in the shape of an axe head with a broad bilinear gilded border with a section of transverse billeting on each edge. Pendants in the shape of weapons are a known custom of Germanic females from later Roman times; the commonest shape is the shield (the ‘scutiform’ pendant), but miniature swords and spears are also known. Pelta-shaped fittings are a common format in the 6th and 7th centuries.
"A part of the Gosforth Cross showing, among other things, Thor's fishing trip." Yes, the Gosforth carvings seems to favor Norse mythological material dealing with gods combating monsters. And by monsters, in this case, they seem to mean, specifically, Loki's children Jörmungandr and Fenrir.
"Pictish Stone at Aberlemno Church Yard - Battle Scene. The Battle of Dun Nechtain or Battle of Nechtansmere (Scottish Gaelic: Blàr Dhùn Neachdain, Old Irish: Dún Nechtain, Old Welsh: Linn Garan, Old English: Nechtansmere) was fought between the Picts, led by King Bridei Mac Bili, and the Northumbrians, led by King Ecgfrith on 20 May 685." Wiki; Battle of Dun Nectain