The Sierra del Carmen is the northernmost part of the Sierra Madre Oriental (Coahuila State). It stretches from the Rio Grande at the US-border for about 70 kilometres towards south-east. Some authorities include parts of the Chisos mountains of the Big Bend National Park in the USA as part of the Sierra del Carmen.
USA 1999, Rio Grande and Sierra del Carmen (left).
A view of the Rio Grande and Sierra del Carmen (left) in the Big Bend Nationalpark in Texas (USA).
The stamp is showing a view from a viewpoint in the west of Lajitas (Texas) beside the road 170, looking west along the Rio Grande.
The Rio Grande River separates the Big Bend Nationalpark in Texas from Mexico.
Mexico 2009, Sierra del Carmen.
The stamp was issued in the series "Terras Silvestres".