Texas and Mexico
The Texas/Mexico border is featured in this MODIS Terra image, acquired June 15, 2006. Texas is in the top half of the image, Mexico in the bottom. The Rio Grande river forms a natural border between the two - the river runs along the blue line in the image. At far right is a glimpse of the Gulf of Mexico.
The Sierra Madre Oriental mountain range, which runs diagonally through the lower center of the image, is a southward extension of the Rocky Mountains of New Mexico and Texas. It starts at the Big Bend region of the Texas-Mexico border, which is right in the center of the image.
In contrast, there are long stretches of plains along the Rio Grande River, north of the mountains. In Texas, the Rio Grande valley is largely used for cattle ranching.