20659 Zip Code (Mechanicsville, MD) Detailed Profile. Cities: Mechanicsville, MD (4.97%), Golden Beach, MD (4.43%), Charlotte Hall, MD (2.79%) Counties: St. Mary's County, MD (96.05%), Charles County, MD (3.95%) Estimated zip code population in 2015: 24,656. Zip code population in 2010: 23,498.
the volcano mauna loa in hawaii used to be thought of as the largest volcano in the world but scientists have discovered one that s bigger much much bigger tamu massif is a massive volcano about the size of the british isles or more than three times the size of new brunswick
âAt the beginning we were concerned it could be leading up to an eruption.â. Area of outstanding natural beauty: The Yellowstone caldera (circled in red) in Wyoming is the world's largest super-volcano. Scorched earth: An artist's interpretation of how the Midway Basin in the park might look after an eruption.