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Intense Cratering

The complex terrain of Ariel is captured in this view of its southern hemisphere. Most of the surface consists of intensely cratered terrain transected by fault scarps and graben. Some of the largest graben, which can be seen near the terminator (at right), are partly filled with younger deposits that are less heavily cratered. Bright spots near the limb and toward the left are chiefly the rims of craters. Most of the brightly rimmed craters are too small to be resolved here, although one crater about 30 km (20 mi) in diameter is easy to spot near the center.

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