The big green buses of BusVia carry passengers halfway up Mount Vesuvius to the trail head, from which visitors must hike 20 minutes up this steep cinder path to reach the rim. The trail offers sweeping views of the Bay of Naples and the dense population corridor between Naples and Sorrento, which are threatened by the inevitable next eruption from the volcano that buried Pompeii and Herculaneum in 79 AD.
