Just because there are posted coordinates doughnut mean it's there to search for a cache.
Just because this is a logic puzzle, it means you need to look at the photo below, then, solve to find the incorrect letter to complete puzzle correctly. Variables for equation to cache coordinates... Incorrect letter=A; Correct letter=B; A-B=C; A+C=D; C+C=E....(ABCBA x E00.A0DE)+C ...those are zeros in equation, round off decimal in answer.
Just Because...a checker
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