Assassin's Creed Valhalla: Dawn of Ragnarök

According to some sources, in Norse mythology the dwarves live underground in Svartalfheim. 
Places which resemble labyrinthine complex of mines and forges.
So it was only natural, to ‘delve deeper’ into the topic and explore visual opportunities for subterranean dwelling and urbanization. 
This is an early concept for Uldar (one of the great dwarven underground mine-turned-city in Dawn of Ragnarök), utilizing this visual search and exploration.