How Geocaching Works
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Note: The posted co-ordinates are bogus.
However, GZ is within 1 km. of them.
All the information you need is in the following BMP File. To download it, right click here and choose 'Save Target as' or if you are NOT using Internet Explorer, then you can right click on the image and choose 'Save Picture as'.
It is a 1 litre sistema box with small swaps.
If you are uncertain of your answer and want confirmation, please feel free to email me your calculated co-ordinates and I will verify them for you.
(No hints available.)