This three-dimensional view of Alcedo Volcano on Isabela Island is constructed by overlaying a radar image on a digital elevation map. The vertical scale is about twice that in real life to better see structures such as faults, and fractures, and topography. The radar image was taken on the 40th orbit of space shuttle Endeavour. The image covers an area of 47 by 37 miles. The angle at which the image was taken is about 20 degrees. The bright features on the right flank of the volcano are rough lava flows. Ash deposits and smooth pahoehoe lava flows appear dark.