The final cache is not at the listed coordinates.
You need to solve the simple puzzle to find the coordinates. If this type of puzzle is not your forte then there are plenty of online solvers that will help you. Once the puzzle is completed you will be able to determine the final coordinates which are less than 500 meters away. The cache has been placed in the green area of the Baakens Valley just off the Guinea Fowl trail. 
The cache is a bison tube in a "container". It is not necessary to remove the bison tube. Just unscrew the lid to access the logbook. There is no space for trades. BYOP
You can check your answers for this puzzle on 
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FTF Spesbona