D had gone to bed and I was sitting watching one of my favourite TV Shows.
The two brainiacks had discovered some clues as to the location of someone they were looking for.
Despite being the brainiacks, they had no idea what the clues meant. One of the muscle characters came in and told them what it was. The muscle had to explain and show the Brainiacks that the clues were a location somewhere in the world.
I thought this must be something the story writer dreamed up and that it was fictional. BUT when I Googled it, I found that it was genuine. Hence then name, "Never too old to learn".
So, the clue to the final location of this cache is:
In order make advances toward the claim of finding this cache, you will have to do some investigating of your own, before you will be handed the answer.
The checker is going to give you an error margin of 4.2426 meters. This alone is also a clue.
You can validate your puzzle solution with certitude.