Hardest mountain to climb in the UK?

Answer 1

The Inn Pinn on the Isle of Skye is the only mountain which requires actual rock climbing to reach the summit, other peaks of the black Cullin on Skye also require some sustained scrambling (also the slightly smaller Clach Glas is a serious undertaking)

There are some very remote mountains in Scotland which are hard to climb because of long pathless walks over very rough ground. On the mainland of the UK Tryfan in North Wales requires some sustained scrambling to reach the top and is quite a challenge by British standards. The most difficult mountain experience in the UK is a full traverse of the black Cullin ridge on the Isle of Skye, this is world class mountaineering and is only for the experienced. (on a side note the sea stack 'stack an armin' in the St Kilda archipelago, roughly 40km of the north west of mainland Scotland is high enough to fit within the category of a 'Marylin. This would be by far the most difficult summit to attain in the UK and may have only been climbed a very few times.

Answer 2

Indian face on Clogwynn D'ur Arddhu