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Piedras Negras(pyā`thräs nā`gräs) [Span.,=black stones], ruined city of the Classic era of the MayaMaya
, indigenous people of S Mexico and Central America, occupying an area comprising the Yucatán peninsula and much of the present state of Chiapas in Mexico, Guatemala, Belize, parts of El Salvador, and extreme western Honduras.
..... Click the link for more information. , NW Petén, Guatemala, in the Usumacinta valley. Reaching a peak of sculptural achievement (according to one dating system, between 731 and 795), Piedras Negras developed some of the finest pre-Columbian stonework.
Piedras Negras,city (1990 pop. 96,178), Coahuila state, N Mexico, on the Rio Grande opposite Eagle Pass, Tex. Founded in 1849, the city grew as an international shipping point. Piedras Negras is a commercial and processsing center for the surrounding agricultural region. Industry includes coal mining and metal-ore furnaces. In 1888, Piedras Negras was renamed Ciudad Porfirio Díaz in honor of the dictator, but the old name was restored after his overthrow.
a city in northeastern Mexico, in the state of Coahuila; situated on the Rio Grande, at the US border. Population, 65,900 (1970). Piedras Negras is linked with Mexico City by railroad and highway. It has a ferrous metallurgy industry. Border trade with the USA is conducted through the city.