The cache is NOT at the posted co ordinates.
Stage 1: Use your OL28 1:25000 map
At the Sourton Tor trig point, you head south where you pick up a decent track that appears to be a dismantled railway. Following this track to gradually gain altitude you see an impressive tor to the south and decide to ascend it and stand atop the highest point. Approx 1.5km to the south west, a stone cross of some considerable size is visible so you head to it. From the cross, a track can be seen on the lower slopes of the hill that leads downhill; following this brings you to a parking area. Which OS grid square are you now in? Grid = ABCD
Stage 2: Visit the trig point and obtain the four digit number from the base plate. Trig No = EFGH
The cache can be found at:
N 50 (F-B) (H-F) . (E+H-B) (F-D+C) H
W 004 (D-A) (A-B) . (F-B) (E-A) (F-A)
