Still, it's bright enough for the rover to see its own shadow. The pebbly ground, which may be part of an ancient alluvial fan (water-flowing area), is also clear. Those grayish splotches are areas where Curiosity's sky crane descent stage blew away the dust with its rockets, and those will be interesting targets for scientists. Curiosity team members want to study the bedrock at Gale Crater to understand how the crater formed and what minerals are present there. They need to be careful the hydrazine rocket fuel doesn't interfere with measurements, however, which is one reason they don't plan to visit the descent stage itself, which isn't too far away.