4 Main Supplements.
N52 _,_._,_,_ E000 _,_._,_,_
This cache is not at the posted coordinates.
North coords: Take the last 5 digits from the Final North coords of GC7XR49 and GC7XYY0
This one should get your brain ticking.
Add these 2 numbers together, then divide by 2. Subtract 976 from this number.
East coords. Take the last 5 digits from the Final East coords of GC7WW5J and GC7W0ME
You can check your answers for this puzzle on GeoChecker.com.
Add these 2 numbers together, then divide by 2. Add 3212.5 to this number.. C:GEO had the advantage.