Mexico City, Mexico
Mexico City (in Spanish: Ciudad de México) is the capital city of Mexico. It is the most important economic, industrial and cultural center in the country, and the most populous city with over 8,836,045 inhabitants in 2008.
The city center appears bright white, and the outskirts light grey. The large dark grey patch is a flat area with some agriculture, criss-crossed by canals. At the bottom of this dark grey zone there is a black rectangle; this is Lake Nabor Carrillo.
Mexico City is located in the Valley of Mexico, also called the Valley of Anáhuac, a large valley in the high plateaus at the center of Mexico, at an altitude of 2,240 meters (7,349 ft).
This valley is located in the Trans-Mexican Volcanic Belt located in the high plateaus of central Mexico. It has a minimum altitude of 2,200 meters above sea level and surrounded by mountains and volcanoes that reach elevations of over 5,000 meters.
The city primarily rests on the heavily-saturated clay of what used to be Lake Texcoco. This soft base is collapsing due to the over-extraction of groundwater and since the beginning of the 20th century, the city has sunk as much as nine meters in some areas.