Christian Gottfried Ehrenberg
Professor at the University of Berlin, came to Ischia and lived in the Piccola Sentinella and from here ran the island and from there it was interested in the animal and plant kingdoms of the hot springs. At a news conference, which was held at the Prussian Academy spoke on the forces of Piazza Bagni in Casamicciola, hot water that flows and oozes in different areas in the Valle del Tamburo and on the rocky walls of a hole of the same and that breaks the rock in clay mass.