JEB4917059: The rest of the quarries of the ochre to Roussillon. You can see the entrance of mine galleries and the different shades of ochre. Ochre is a pure clay known as Kaolinite coloured by a pigment of mineral origin Iron Hydroxide. Vaucluse, Provence-Alpes-Cote d'Azur (Provence Alpes Cote d'Azur), France. Photography 2011 / Bridgeman Images