The Magellan spacecraft has observed remnant  landslide deposits apparently resulting  from the collapse of volcanic structures.  This image,  centered at 45.2 degrees south latitude, 201.4 degrees east  longitude,  shows a collapse deposit 70 kilometers (43 miles)  across- The bright, highly textured deposit near the center of the  image probably consists of huge blocks of fractured volcanic rock,  many as large as several hundred meters across. A remnant of the volcano itself,  about 20 kilometers (12.4 miles)  across,  is seen at the center of the image.  The distorted radar appearance of the volcano is a result of extremely steep slopes on the "scars" from which the landslide material originated. A field of numerous small volcanic domes can be seen in the northern half of the image. The bright irregular lineaments trending to the north-northwest are ridges caused by regional tectonic deformation of the upper layers of the Venusian crust.