关于这张图
This VIS image shows a cross section of Pavonis Mons, including the central part of the smaller summit caldera (circular depression). On the top side of the caldera is a complex region of fault related collapse of the wall of the caldera. Several intersecting faults are visible there. The faults would have formed areas of weakness in the caldera wall, precipitating into gravity driven down slope movement of materials. This caldera is approximately 5km (3 miles) deep, much deeper that the larger caldera that surrounds the northern and eastern sides of the small caldera. Pavonis Mons, like the o…