This volcano lies just to the east of Biblis Patera on the northwest part of Tharsis. It is similar in size to Biblis Patera, is surrounded by younger flows, and has two superposed craters, probably of impact origin. These craters are older than the surrounding plains, and they have intersected the caldera walls and pushed material into the floor of the caldera. The image is about 160 km across.
North is to the upper left.