1,093 comments posted · 3 followers · following 1
I think the first clue is a picture of marine rocks, so I can't reconcile that with North Dakota....
I think the first clue is a picture of rocks that have been bored by a marine creature, so I guess that limits your above list to Texas, Washington, and California. Of those, Texas, being southernmost, would be the most likely. Of course, I would love for it to be California. :)