Figure 1.7: Left-looking F-MIDR 15s214 radar image of the southeast quadrant of the volcanic edifice centered at 15°S, 215°E. Surface structures are identified (Koenig and Pollard, 1998) as graben (g), fractures (f), terminal lava flows (tlf), and radial lava flows (rlf). The graben and fractures radiate from the volcanic center in the upper left corner of the image.