Río Caldo public hot springs Activity · Lobios, Baixa Limia, Ourense Image of Lobios, not of the place itself. Open-air pools fed by the same springs the Romans used at the mansio of Aquis Originis, on the banks of the River Caldo; the water rises very hot and cools as it mixes with the current. Photo: Pementa (CC BY-SA 4.0) What to see and do in Lobios