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The official channel of the France 3 show. C'est pas sorcier, the magazine of discovery and science. The C'est pas sorcier team explains everything about the origin of stones and their extraction methods. Fred went to marble and granite quarries for an... explosive show! We find him in the Sidobre massif, in the South-West of France: under his feet lies a granite slab 10 km long and 5 km wide. We discover with him how blocks weighing several thousand tons are cut from this 300 million year old rock. He then goes to a magnificent red marble quarry in Caunes-Minervois.