Valle DE Bove
The lava flow under the cloud is less than three months old. "After passing up through the defile, called the Rocca di Calanna, we enter a third Valley of truly magnificent dimensions the Vale de Bove, a vast amphitheater for 5 miles in diameter, surrounded by nearly vertical precipice varying from 1000 to about 3000 feet in height, the loftiest being at the upper end, and the height gradually diminishing on both sides." Principle of Geology Volume III Charles Lyell
