We're not going to take any risks. It's a big crater in terms of diameter, but really shallow. It's nothing like Endurance.

In terms of sheer scenic grandeur, it is the most spectacular image we've taken. It's like nothing else on Mars.

There's nothing wrong with being shallow as long as you're insightful about it.

Wind has to be involved at some level you figure. Frost might have helped. A frost build-up on arrays could coagulate the dust...but the fact is that we don't understand it very well. But I'll take it.

[Before launch] it just seemed impossibly far away, it seemed unreachable. Tonight, I go out knowing our rovers have been there a whole Martian year...it's a much more familiar planet. We know the place.

There are cliffs the rover could fall over and die if we aren't careful. We are gong to proceed carefully and methodically.