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Geography of Guam

Guam is a U.S. territory in the western Pacific Ocean, at the boundary of the Philippine Sea. It is the southernmost and largest member of the Mariana Islands archipelago, which is itself the northernmost group of islands in Micronesia. Wikipedia
Area: 210 mi²
Archipelago: Mariana Islands
Length: 51 km (31.7 mi)
Coordinates: 13°26′31″N 144°46′35″E / 13.44194°N 144.77639°E
Ethnic groups: Native Chamorros (57%), Filipino (25.5%), White (10%), Chinese, Japanese and Korean ancestry
Highest elevation: 406 m (1332 ft)
Highest point: Mount Lamlam