Factual error: Bjørn is living in a log cabin in the mountains. This logging technique was not common until 2-300 years later.
Factual error: A crosshead screw is attached to Ivar's frame. (00:11:21)
The Profit and the Loss - S4-E7
Factual error: When Floki has a vision of Aslaug outside the viking camp along the seine river in France, the vegetation is that of a pine forest and the landscape is that of a mountainous region. There is no such area from the English channel to Paris, which is only flatland. The scene was filmed in Scotland. (00:34:25)
