El camino del rey has been redone to make it safe, it was closed to the public for a long time, but people sneaked on (and a few fell off and died).....
The postman's walk from Tarbet on Harris is the most daring and beautiful walk I have done.
My wife and I did the Ness Glen walk to the west of Loch Doon the other day.
The river was in full spate and the rock path is very narrow and slippy in places. It was pretty scary, especially the bit when the dog nearly knocked me in.