When winter is coming, the snow covers the rocks and it’s no longer possible to climb the alpine mountains looking for precious minerals. For some strahlers, the crystal seasons stops there and they will wait until the next summer fo a new season to begin. In Oisans, the hunt continues undergound, in the dark, cold and wet universe of mines. Follow Sébastien Khayati and Grégoire de Bodinat in the famous Mésage mine, not far from Vizille, another famous minerals locality. This old iron mine has been rehabilitated by Grégoire. Enjoy !