Country/territory: Japan
Central coordinates (latitude / longitude): 32°01'59"N (32.0333°) / 128°24'00"E (128.4000°)
Area (reported): 416 hectares / 4.16 km² / 1,028 acres / 1.61 square miles
Area (GIS-derived): 450 hectares / 4.50 km² / 1,112 acres / 1.74 square miles
Altitude: 0–125 m (0–410 ft)