Country/territory: Portugal
Central coordinates (latitude / longitude): 40°10'00"N (40.1667°) / 008°33'00"W (-8.5500°)
Area (reported): 482 hectares / 4.82 km² / 1,191 acres / 1.86 square miles
Area (GIS-derived): 483 hectares / 4.83 km² / 1,194 acres / 1.86 square miles
Altitude: 9–15 m (30–49 ft)