The most difficult Munros, in my opinion, are several on The Cuillin Ridge, Inaccessible Pinnacle of Sgurr Derag,3235ft., climbed by myself and my friend,Graham McPhie on 30-APR-1988 Sgurr a'Ghreadaidh,3189ft.,Sgurr Thearlaich,3209ft, Sgurr Mhic Choinnich,3110ft, Sgurr nan Gillean,3163ft, Sgurr a'Mhadaidh,3012ft., Sgurr na Banachdich,3166ft, Sgurr Thormaid,3038ft, climbed first by @Norman Collie.,Sgurr Alasdair,3255ft, Sgurr Dubh Mor.3097ft., All of these Cuillin peaks require rock-climbing, or at the least, scrambling-profficiency. On no account should an inexperienced hillwalker attempt these peaks without some sort of scrambling, and a compass is useless,due to The Black Cuillin magnetic gabbro rock After Skye comes the mainland peaks or ridges, The Aonach Eagach Ridge, Glen Coe, The AnTeallach Ridge, Wester Ross, The Liathach Ridge, Wester Ross, Beinn Eighe Ridge, Wester Ross.  Bla Bheinn,3045ft, off the main ridge, requires some mild-scrambling ability.@aileanban53 ,facebook.com/alan.macdonald.3150