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Tracks details: On the left, we see a low-resolution overview of several tracks, showing their appearance over hundreds of kilometers. The small white box indicates the location of the high-resolution image on the right of a track that passes tangentially just below two large craters. In the close up view, we see that this track again passes precisely tangent to another crater too small to be seen in the previous overview image, and has characteristics similar to other tracks. Sources: M1700670pctx.gif & M1700669p.gif.