Tuff. Close-up of the surface of a specimen of tuff. Tuff, or tuffstone, is an extrusive igneous (volcanic) rock composed of compacted volcanic ash.

---

Size: 5079px × 3562px
Photo credit: © DIRK WIERSMA/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ash, close-, compacted, detail, earth, extrusive, geographical, geography, geological, geology, igneous, mineralogy, rock, sample, science, specimen, stone, surface, tuff, tuffstone, volcanic, volcanology, vulcanology