To get here you have already done a lot of driving on the East Harrison FSR. Allow me to add to your pleasure, a much shorter drive, though involving a bit more uphill than you have experienced up until here. You are probably up this way to grab a cache anyway, so, enjoy another. This is not intended to be difficult -- should be easy enough I expect.
Stage 1 (posted coordinates) - there are some blank white sign(s) on a stump
Stage 2 - more seemingly meaningless blank white sign(s) on yet another stump
Stage 3 - yet another sign, top 3 lines being: "Danger - overhead power lines"
- C = 7th digit of ten-digit phone #
- D = 3rd digit of # of kV indicated on sign
- E = 4th digit of ten-digit phone #
- F = 3rd digit of ten-digit phone # + 1
- G = 1st digit of # of kV indicated on sign
- H = 1st digit of ten-digit phone #
- I = 3rd digit of # of kV indicated on sign
- J = last digit of ten-digit phone #
Final: N49 AB.CDE 121 FG.HIJ
- Checksum of final 5 digits of N coordinates=35
- Checksum of final 5 digits of W coordinates=20
Good luck!
The final is not far off.