From the provided coordinates, you can look out towards Mull's striking west coast. The cliffs of Gribun and Balmeanach loom over the handful of cottages and farms situated below. You may, of course, not be able to see a thing if the sea mist has rolled in over Ulva.
In which case, you'll probably want to crack on with finding this cache. In order to find the location of the final cache, walk along the path (I won't tell you which direction - that would be too easy) for no more than 100 metres until you find a tall wooden signpost with two different signs on.
Using info. from this signpost, input the coded letter substitutes (see bold letters below) to work out the coordinates to the final geocache; it's not too far away.
The final coordinates: N 56° AB.CDC W 6° EE.EFG
A = The total number of '+' symbols on both signs
B = The number of consonants on the higher sign
C = The number of 'E's on the lower sign
D = The number of letters after the '+' symbol on the higher sign
E = The total number of apostrophes on both signs
F = The number of 'R's on the lower sign
G = The number of 'I's on the lower sign