HiRISE: Recurring slope lineae in Raga Crater

This image covers Raga Crater, the location of well-studied recurring slope lineae (RSL). RSL are dark flows that disappear and re-form every Mars year at certain locations. A closeup image compares the dark flows at the same time in three consecutive Mars years. We can see that the pattern of lineae is nearly the same every year, but in the latest image they are slightly shorter… [More at link]