The regions, with their names and numbering are taken from The Relative Hills of Britain by Alan Dawson.
The Scottish 500-609m tops (elsewhere in Britain known as Deweys) have been split into two lists, one covering the Scottish Highlands and the other the Scottish Lowlands.
Highland Fives
A Highland Five is a hill in the Scottish Highlands between 500m and 609m high with a drop of at least 30m on all sides.
A subHighland Five is a hill which just fails (by up to 10m) to qualify on the drop rule, i.e. between 500m and 609m high with a drop of 20-29m.
(Highland Fives appear as Class=5H on this website, and subHighland Fives as Class=s5H).
Donald Deweys
A Donald Dewey is a hill in the Scottish Lowlands between 500m and 609m high with a drop of at least 30m on all sides.
A subDonald Dewey is a hill which just fails (by up to 10m) to qualify on the drop rule, i.e. between 500m and 609m high with a drop of 20-29m.
(Donald Deweys appear as Class=5D on this website, and subDonald Deweys as Class=s5D).
The hills between 490 and 499m with 30m drop are also included on this site, but these have not been sub-divided. They appear as class=4. The hills between 490 and 499m with 20-29m drop are also included as class=s4.
