The white, mottled area in the right-center of this image is Madrid. Located on the Meseta Central, a vast plateau covering about 40 percent of the country, this city of 3 million is very near the exact geographic center of the Iberian Peninsula. The Meseta is rimmed by mountains and slopes gently to the west and to the series of rivers that form the boundary with Portugal. The plateau is mostly covered with dry grasslands, olive groves and forested hills. To the northwest of Madrid, and visible in the upper left of the image, is the Sistema Central mountain chain. Rising to about 8,200 feet, these mountains display some glacial features and are snow-capped for most of the year. Three visualization methods were combined to produce this image: shading and color coding of topographic height and radar image intensity. Color coding is directly related to topographic height, with green at the lower elevations, rising through yellow and brown to white at the highest elevations. The shade image was combined with the radar intensity image in the flat areas. Elevation data was acquired by the SRTM aboard the Endeavour, launched on Feb. 11, 2000.