You can always count on "Countess Sadie", so a counting we will go. What you count will be used to find further waypoints.
At the posted coordinates you will find a chain. COUNT the number of links, subtract 11 and call it A. Let B = A X 12.421 and C = A X 13.789 and make a projection of B Meters C Degrees.
At this location COUNT the number of Hydro Towers. Forget this number as it is impossible. Now COUNT the number of main structures you see in the distance between 240 and 260 Degrees and call this number D. Let E = D X 67.75 and F = D X 56.5 and make a projection of E Meters F Degrees.
At this location you will find a 4 digit number. Call it G. Let H = the first two digits of G X 66 and I = the last two digits of G X 166 and replace the North Coordinates with H and the West Coordinates with I.
At this new location you will find a metal Box. COUNT the number of Terminals and call it J. Let K = J X 22.3 and L = J X 5.78 and make a projection of K Meters L Degrees.
At this new location you should find a Tag. Call it M. Let N = M X .92 and O = M X 6.54 and make a projection of M Meters and O Degrees which will take you to the cache.