Experimental bucket
Peer back into the crater of an incomplete circle, especially in small kraterchik on the rim in three hours. He is a very unnatural and has all the terrestrial signs of experimental Bucket: they took bucket "mammoth" to see what he is fit. Experimental scoop shot on a close distance and is a possible explanation for a lot of small craters abnormal. It is interesting to look at more recent pictures of the craters. Sorry, but I was searching in vain. And, of course, more recent snapshot would reveal a different "architecture" - a large portion of the rim has to disappear, the more waste material thrown away and maybe the "X-drones" have moved to other craters, the other rim.