The city of Herculaneum was covered with a 23 meter high layer of ash during the eruption of the Vesuv in the year 79 A.C. By cooling down this material hardened to tuff.
|
The city of Herculaneum was covered with a 23 meter high layer of ash during the eruption of the Vesuv in the year 79 A.C. By cooling down this material hardened to tuff.
|