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Continuation of the video on the Baicolliou mine. A somewhat special sequel, in total immersion in the underground world. A video to watch on the big screen, with unpublished images, joy, stress, collapsed galleries, gas, ... A lot of intensity and emotions for this visit to the Baicolliou mine, in Grimentz, Switzerland. Find us on our website http://www.cristalsources.com or on facebook / 264810183563819 and My life in Thonon / mavieathonon