That has the look of a percussion mark, to me. The shape is elipsoidal, the internal part is fractured, the envolving rock seams, by contrast, healty. It would be a strange rockslide. Even if the scale of the scar is dificult to evaluate from the photo, a mass of an average car falling at the final speed of a meteorite, would not let more evidence on a granite surface than this, I think. Big craters form when cosmic speed is maintained, with asteroid sized bodies, but why are we expecting such a big thing? AA
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