Sierra Atravesada
The Sierra Atravesada or Sierra de Niltepec is a mountain range in the state of Oaxaca, Mexico, in the region of the Isthmus of Tehuantepec.
The Sierra Atravesada or Sierra de Niltepec is a mountain range in the state of Oaxaca, Mexico, in the region of the Isthmus of Tehuantepec.