Surgit pulchellus puer, obicit mihi me ad Baias fuisse. falsum, sed tamen ‘quid? hoc simile est’ inquam ‘quasi in operto dicas fuisse?’ ‘quid’ inquit «homini Arpinati cum aquis calidisAguas termales o calientes de forma natural. Surgen en la naturaleza con una temperatura elevada.?» ‘narra’ inquam ‘patrono tuo, qui Arpinatis aquas concupivit’ (nosti enim Marianas).
Plinius Naturalis historia 31.4
Pliny the Elder indicates the importance of mineral and thermal springs were for humans, and how in some occassions, these springs caused the creation of some urbes because the value of these waters for health. In this case, he includes the examples of some of those cities: Puteolos (Puteoli, Italy), (Aquae) Statiellas (Acqui Terme, Italy) and (Aquae) Sextias (Aix-en-Provence, in France)