Told by the Northmen: The Asa Fortress (2)

Loki tricks an ice giant into building the Asas a fortress for free. Only the fortuitous return of Thor, as the first day of summer dawns, stops Valhalla getting trashed in revenge. The three blocks for the portal remained unfinished.

I have based the fortress on known viking forts, a bit. They tended to be round palisades, rather than castles.

Conceived as an illustration for 'Told by the Northmen' by Wilmot-Buxton.