The Gravina (also called Gravina di Picciano) is an Italian river that flows into the Bradano. Its source is near Poggiorsini in the province of Bari. It flows southeast and crosses into the province of Matera before emptying into the Bradano a short distance after the Bradano exits Lago di San Giuliano.
- The Times (1985), Atlas of the World: Comprehensive Edition, Times Books, Plate 80 (M2).
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