Two stages
At Arrow Head copy the year the tablet was erected =XXXX
XXXX - 1901 = AB
XXXX - 982 = CDE
Final stage is located at: N44 53.0AB W093 09.CDE
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On a road to nowhere, you're never quite sure how you got there, where you're going, or even where you've been. The best thing to do is sit back, relax, and enjoy the ride! It will be painless, and you won't even need to ask for directions.
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You can check your answers for this puzzle on GeoChecker.com.