Van,

I stated they were speculation because that is all they can be. No close up study was done.

I condemn NASA for not doing a close-up study of the area

Why would they not investigate? In my opinion they either knew what it was based on previous studies from inside Endurance crater or another location, they are so smart that they think they can tell from just the visible data like me or they are stupid. I don’t think they are stupid.