Figure 3: Distribution of the surface uplift preceding the Mt. Nuovo eruption.
From: Magma transfer at Campi Flegrei caldera (Italy) before the 1538 AD eruption

From 1251 to 1536 (a) the uplift affects the whole caldera, with a maximum in the Pozzuoli area. From 1536 to 1538 (b) the uplift is centred in the area of the future eruption (Monte Nuovo). Digital Terrain Model by INGV-Osservatorio Vesuviano.