The Ouachita Mountains in west central USA are more than 300 million years old. Today, they are weather-beaten and noticeably eroded. The remains that you can see in this image were once a part of a much more extensive mountain range that is believed to have spanned from Texas to Southeast Canada. The image combined information from the wavelength ranges of infrared, red and green. The complex shape of the mountains is characterised by a pattern of longish, folded formations. Between the mountain slopes, you can see water, vegetation, cities and streets.
Picture taken on November 13, 2002
Sensor: Terra ASTER
Band combination: R/G/IR