In reply to ow arm: The East Ridge of Y Garn in Winter would be the time ...a rope/crampons/an axe would all have helped!
UKC route description:
2 pitches. Mostly a scramble but the crux section near the top needs protecting in Winter as the narrow ledges are very exposed and a slip (on Verglas or snow)would have serious consequences. Short but exposed and enjoyable with good spike belays.
And my log notes:
Nerve racking without a rope, axe or crampons (crazy idea) snow obscured vital holds, and the narrow ledges that form the crux were hair raisingly icy. Wind rising and intermittent driving snow during the ascent. Memorable learning experience, and a relief to top out in one piece.