On 2021-09-15 6:22 PM (-4), Samuel B. wrote:
> 
> "A" points to three features I suspect might have been produced by asteroids
> scraping the surface. Notice how they seem to have occurred on the sides or
> upper portions of a (really large) sloping hill? To me that indicates they were
> perhaps caused by asteroids hitting the moon at glancing angles... But I can
> definitely see how they could have been caused by collapsed lava tubes.

I'm guessing rills; if not that, collapsed lava tubes.  It's not
intuitive, but as far as I know, impact craters are always circular,
regardless of impact angle.  If anything, a glancing impact might create
a series of craters, rather than a linear gouge.

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