The Turtles enter the Viking village
A Viking village appears in the 1987 Teenage Mutant Ninja Turtles TV series episode Northern Lights Out. Eric the Red-Eye and members of his cult live there. It is located underground, beneath Norway, and is a replica of historical Viking villages around the year 1000 AD.
The village is located next to a fiord cliff. The Turtles follow Eric the Red-Eye and his henchmen as they ride in the Viking longship into the Viking village. Eric the Red-Eye and his henchmen have engineered installations to allow the cliff to open and close.