National Three Peaks Challenge
Popular walking challenge climbing Ben Nevis, Scafell Pike and Snowdon in 24 hours.
Yorkshire Dales Three Peaks
Classic walking challenge climbing Whernside, Ingleborough and Pen-y-ghent in one day.
Munros, Corbetts, Grahams, Hewitts, Marilyns, Murdos, Wainwrights, Nuttalls...
Drop, relative height, prominence - all terms for the sticky-upness of a peak
Two types of drop
A subtle distinction
A new concept - relative relative height
Photo: Seniors' Ridge and Idwal Slabs on Glyder Fawr, Snowdonia