High Cup is a perfectly formed U-shaped valley that has been carved out of the side of Dufton Fell.

In effect it is a deep chasm surrounded by grey-blue dolerite crags, whose continued crumbling scatters scree down the flanks of the valley. It is often referred to as High Cup Nick, though that is only one part of the huge scar, and is sometimes applied to the waterfall.

It really is a hidden gem.