Spring of San Xoán de Lagostelle Nature · Guitiriz, Terra Chá, Lugo Image of Guitiriz, not of the place itself. A spring of sodium bicarbonate and sulphurous water that rises at about fifteen degrees and gave birth to spa life in Guitiriz; together with the Valdovín and Santo Domingo springs it forms the trio of sources linked by the Ruta da Auga. Photo: HombreDHojalata (CC BY-SA 3.0) What to see and do in Guitiriz