This section brings together articles dedicated to underground quarries, covering extraction history, transport methods, consolidation techniques, and sites like the ochre quarries of the Luberon. It explains the etymology of the word quarry from the Latin quadrus lapis, meaning cut stone, and traces the evolution of stone transport from wooden carts. Additionally, these articles detail consolidation methods designed to stabilize underground voids for surface structures while showcasing the colorful heritage of the Massif des Ocres.