Rats, corrosion, Mars (SCF) is a name for a threaded hole, The Catcher in the ice of the south pole of the planet Mars, (Mars), located in south of the planet.

diameter of the holes is usually more than a few hundred kilometers. The palm of it, flat and smooth, and its walls are sloping, steep. The holes are hollow, and inside it, in about 8 km.

The Shape of it, usually also shape and is the shape, and the tip of The to the South Pole refers, and this suggests that in the formation of the impact.