Latest adventure recently was the 4 Munro circuit called the Ring of Steall,up Glen Nevis,Fort William.A long day(10-12 hrs),with narrow ridges and bits of scrambling for added fun.John,my walking pal, recently did the Mont Blanc traverse,ie a high alpine route through the Alps,avoiding summits),and said this route was as close as it's felt to being an alpine route.Typical section below
Route details here https://www.walkhighlands.co.uk/fortwilliam/ringofsteall.shtml
If that route doesnt float your boat,The walk up Glen Nevis(around an hours walk there,hour back) is worth a wander in itself,walking thru a rocky narrow gorge,ending at one of the best waterfalls in Scotland(Falls of Steall).Only downside is if you want to get right up and close to the waterfall,you have to cross this wire bridge to get to it.2 wires for hands,one wire for feet.Click to enlarge
Failing that theres a shallow crossable stream to the right if yuove a pair of crocs or wellies