The topography of Diu is predominantly flat and low-lying, with an average elevation barely above sea level. The highest point on the island reaches only about 29 meters (95 feet).
Despite its flat interior, the island's edges feature fascinating geological formations. The southern coast is jagged, featuring limestone cliffs that plunge directly into the sea, heavily eroded by centuries of crashing waves. One of the most striking topographical features is the Naida Caves—a network of interconnected caverns and grottos formed by a combination of natural geological processes and historical quarrying by the Portuguese. To the north, facing the mainland, the topography transitions into flat marshlands and tidal mudflats.
