The cache isn't hidden at the posted coordinates. You'll need to solve the puzzle.
After I found my first camo'd cache I started looking for things I might be able to use. My first thought was a pinecone. So for a little while I accumulated them. I kept them outside to see how they would last and every now and then I tried to drill a hole with little success.
Time passed and I decided to concentrate on puzzles. Finally, over a year later, my pinecone cache is ready. It's based on Cross Sums (which, due to the popularity of Soduku, have since been renamed Kakuro). In such a puzzle, all the spaces must be filled with the digits 1 to 9, no duplicates in any 'word' and the sum is displayed to the left/top of the 'word'.
On the plus side, this puzzle has already been solved. Unfortunately, the digits have been replaced with the letters A to J in no particular order. The cache is located at N47 3A.IGE W122 1F.GHD
Congratulations to Tobias & Petronella on the FTF!