This tells the story of the rocks that were present throughout the very beginnings of the Earth's formation: the rocks of the immovable Canadian Shield. Geologists take viewers down into the bowels of the earth to demonstrate how billions of tonnes of metal mineralized here, after the crust was transformed by huge chunks of molten rock from outer space.

Teacher's guide available under additional info tag Bonus features: - Interview with David Suzuki and key scientific advisers Michel Gautier and John Spray.

Also available in French DV2855.