Ochre quarry. Geologist at a yellow ochre quarry. Ochres are among the earliest pigments used by mankind. They can be various yellow, brown and reddis

---

Ochre quarry. Geologist at a yellow ochre quarry. Ochres are among the earliest pigments used by mankind. They can be various yellow, brown and reddish colours, and are derived from clay that is naturally tinted due to the presence of mineral oxides. Photographed in Gargas, France.

---

Size: 5125px × 3411px
Photo credit: © PHILIPPE PSAILA/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: angiosperm, angiosperms, biological, biology, bird--paradise, botanical, botany, close-, detail, flora, fruit, horticultural, horticulture, madagascariensis, monocot, nature, palm, plant, plants, ravenala, strelitziaceae, travelers, travellers, tree, tropical, tropics