- On the main road between Olbia and Lido di Pittulongu
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The Holy Well of Sa Testa, near Olbia, is one of the main archaeological sites of the Nuragic culture, that existed principally in Sardenya and Corsega around 1700 BC. Made from blocks of granite, the site is 17.5 metres long, and the well itself is 17 steps underground. The thermal waters are reputed to have beneficial effects, and for over 3000 years people have visited the site. A rare opportunity that is not to be missed.