Caption:
View into the Valley, Atrio di Cavalio, Plate XXXIII, from 'Campi Phlegraei: Observations on the Volcanoes of the Two Sicilies', by Sir William Hamilton (1730-1803), published 1776 (hand coloured engraving). 1. Cone of Mount Vesuvius; 2. Interior view of the Cone of the Mountain of Somma with various strata of ancient lava.