Map references: Southeast Asia
Area: total: 21 sq km
land: 21 sq km
water: 0 sq km
Area - comparative: about 0.1 times the size of Washington, DC
Land boundaries: total: 0.34 km
border countries: China 0.34 km
Coastline: 40 km
Maritime claims: not specified
Climate: subtropical; marine with cool winters, warm summers