With an area of 146 acres (52 ha), the island of Bagaud is among the smallest in the archipelago of Hyères. Its low relief rises to 187 ft (57 m) above sea level, with a few sea cliffs that do not exceed 98.4 ft (30 m). The geological structure of the island mainly consists of ovoid quartzites, sandstone phyllades with chloritoids and mica schists, as well as a sedimentary terrain in a reduced outcrop of dune sandstone located on Bagaud's north coast. Its recognition as an Integral Reserve protects it from any disembarkation, mooring on the coast, penetration and movement of people outside of scientific studies and management operations authorized by the Scientific Council of Port-Cros National Park as part of its ten-year process of ecological restoration.