I had a thought about your orientation and casque dig site.
I am thinking that the palm/rock in the lower right is probably a marker of some sort. I liked the idea that the small marker was the same shape as the rock , and that there was a tree in the pic too...but something about the exposed area of that small marker didn't feel right to me.
But what about this: maybe the 'rock' in the image is a 'negative' space rather than a solid object? I mean, what if there is a space roughly that shape and orientation near a palm tree? It's not possible to tell from the pictures--they may or may not have the correct orientation. But I went over the Chicago and Cleveland solves again, and I noticed that he took a lot of liberties with space--the Ohio and Terminal tower clues in the Cleveland picture are 'negative' spaces--not solid. There is a 'florida-shaped' negative space on the right side of the P6--could that also be 'park-shaped' or could there be another negative space somewhere in the image that might help pinpoint the casque?
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