A mosaic of images from the Curiosity rover's Mars Hand Lens Imager shows the rover's camera mast and deck. The pictures were taken on Oct. 31 during operations at a Martian sampling site known as Rocknest.
What created this unusual hill on Mars? Its history has become a topic of research, but its shape and two-tone structure makes it one of the more unusual hills that the robotic Curiosity rover on Mars has rolled near. Dubbed Ireson Hill, the mound rises about 5 meters high and spans about 15 meters across.