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Helen's old geology professor Christopher arrives at the mine.
Axel's conduct changes after a visit to the white wall. Chris sees that the wall is larger and different from their initial estimations.
First Air Date : Sep 20, 2020
Last Air date : Nov 08, 2020
Episode : 8 Episode
Season : 1 Season
Runtime: 45:14 minutes
Studio: SVT1
Country: Finland