FSX/Prepar3D Scenery--Coatzacoalcos photoreal, Mexico. Coatzacoalcos is a major port city in the southern part of the Mexican state of Veracruz, on the Coatzacoalcos River. Coatzacoalcos comes from an indigenous word meaning "Site of the Snake" or "Where the snake hides". The city serves as the municipal seat of the municipality of the same name. By Fernando Angel Gonzalez.