You may recognize the location of the listed coordinates as having a cache container (GCW39J). That cache, a very good one I might add, has nothing to do with this one. However, you must begin your journey here so you might as well pick it up while you're at it.
After you've arrived, you'll notice a couple of tools at your disposal. Use these tools to find your final destination. What are you looking for? Let's just say that you will know it when you see it. The target isn't ambiguous in the least. There won't be any guessing, maybe's, or need for interpretation. You will know it when you see it.
After you find your destination marker go to it and the cache will be just a few feet away.
The Hint: Below are two words from ones who can understand the birds. In order to de-cypher them you must think like the people who would inhabit such an area. Obviously the hint is not necessary to finding the cache, but it would make it a whole lot easier.
Canad Caer
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Plan your hunt according to available hours.