A.H. - CRT Grand Trunk Mystery Cache
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Difficulty:
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Terrain:
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Size: 
(small)
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Part of a small series of caches placed within beautiful downtown Auburn Hills.
The cache is NOT at the posted coordinates. To get final coordinates, go to the posted location and you will be standing in front of a large sign on the Clinton River Trail. From here you will need to do a little math to get the numbers that you need.
North - The bridge crosses which highway? Subtract 36 from the highway number and subtract this new number from the posted north coordinates.
West - The rail was in service for 'X' years? Take X and add 81. Add this new number to the posted west to get your new set of coordinates.
The new coordinates will take you further down the CRT. Please only hunt this cache during daylight hours. You are looking for a small lock and lock.
Additional Hints
(Decrypt)
Onfr bs gerr haqre fgvpxf naq onex.