L shaped dark ejecta

This week I found an image posted by ElisabethB which I think is worth another look.
It’s bright crater with dark L shaped ejecta.

http://www.moonzoo.org/examine/AMZ40013wv
Latitude: -2.69124°
Longitude: 342.478°
Sun Angle: -88.47°

As the crater is not very well placed here, it’s much better to take a look at the strip.

Do we have any more L shaped ejecta patterns?

Are they common?

How did this form?

The LROC strip can be found here http://wms.lroc.asu.edu/lroc/view_lroc/LRO-L-LROC-2-EDR-V1.0/M104634241LE and the crater is near to the top left.

Here is the forum thread with more comments.

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Thomas J is a volunteer Moderator for the Moon Zoo forum