Welsh The Separate Mountains  List & GPS Waypoints

Welsh The Separate Mountains  - The idea behind the list is that a summit needs more drop to feel 'separate' in a highly dissected area than it would on a plateau.
A summit needs to be over 600m height and have 90, 100, 120 or 150m of drop to qualify, depending on how dissected an area is. Dissectedness is calculated by counting the number of segments each hill group is split into by the 400m contour and dividing this by the number of 10km grid squares it covers. The list was originally compiled in 1974 from OS 1 inch maps, metricated from 1976-82 as second series metric maps came out, then adjusted in 2023 using data from the DoBIH.

List compiled and maintained by Iain Thow
 
Members can use the list below as their personal The Separate Mountains  bagging tick list. Just register and log in to tick them off...