Once Under A "Emerald Bridge" Mystery Cache
DeltaMikeAlpha: Stopped by this morning to check on it. It may or may not be missing but I'll archive it anyways. A dog in a yard about 150 yards to the north started barking as I approached and kept at it until the owner came out and started yelling at the dog to shut up. I took that as my cue to leave and will return at a later time to check on it again. If this dog barks every time someone uses this area of the park, this owner must have some pretty pissed off neighbors.
Once Under A "Emerald Bridge"
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Difficulty:
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Terrain:
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Size: 
(small)
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Number Assignment Puzzle.
Cache is located at:
45 degrees Atlanta-point-(Dallas-minus-Richmond),Chicago,(Cleveland-minus-Philadelphia) minutes
93 degrees Kansas City-point-(San Francisco-minus-Minneapolis),Boston,St Louis minutes
I thought long and hard about a more logical cache location. I opted for the safe one.
FTF prize is a two dollar bill.
Additional Hints
(Decrypt)
Lbh rapbhagre bar be zber bs gurfr "Pvgvrf" rirel qnl.
Gurer ner gjryir pvgvrf bs vzcbegnapr. "Arj Lbex" vf gjb.
Purpx lbhe jnyyrg.