Su Gologone

Su Gologone is a karst spring at the foot of Monte Uddè in the Supramonte near Oliena. Water emerges between dolomite walls into a clear pool before flowing toward the Cedrino River.

Why it matters

The spring is a major resurgence of the Supramonte karst system. Its average discharge is about 500 litres per second, with much higher flow during floods. The site was designated a natural monument in 1998.

What to notice

The pool's colour shifts from emerald green to turquoise and deep blue with the light. A short stream carries water from the spring toward the Cedrino River. Below the surface, a flooded shaft has been explored to 135 metres; cave diver Alberto Cavedon reached that depth in 2010. The nearby dolomite walls and the spring's clear water show the karst landscape in an unusually concentrated form.

Context and history

Rain falling on the limestone plateaus of the Supramonte drains through sinkholes and underground passages before returning to the surface at Su Gologone. The resurgence forms part of an extensive subterranean water system, with galleries extending toward the caves of Sa Oche 'e Su Bentu in the Lanaittu valley. The spring's water ultimately feeds the Cedrino and the lowlands toward the Gulf of Orosei.