This image is a composite of the first two orbits recorded by the Magellan spacecraft in August 1990 during the initial in-orbit test of the radar system. The data, which are superimposed on Pioneer Venus topography, are located at the intersection of Devana Chasma and the Phoebe Regio upland. The image covers a region approximately 525 kilometers by 525 kilometers (315 x 315 miles), centered at the equator and 288 degrees east longitude. It includes part of the 150 kilometer (90 miles) wide, 1.0 to 1.5 kilometer (0.6 to 0.9 miles) deep valley, Devana Chasma. Devana Chasma consists of radar bright lineaments, interpreted to be fault scarps, oriented in a north-northeast direction. This part of the planet is thought to be an area where the crust is being stretched and pulled apart producing a rift valley, similar to the East African rift.
