Staring at my Philips’ School Atlas and the page showing “British Isles – Political” this distinction did not seem quite right. A line drawn from Bristol to the Wash would leave much of Lincolnshire, a county with a reputation for flatness, in the “upland” sector, whilst much of Gloucestershire and the Cotswolds in the “lowland” half.
Perhaps I’d just got my line in the wrong place. However, it is indisputable that there are more uplands to the north and west. In Scotland, for example, mountains over 3000 feet or 914.4 meters are called Monros and there is a total of 282 of them. There is no way we in the south can compete with that. Climbers who complete all 282 earn the right to call themselves “Monroists” and join the Monro Society.
Down here in Wessex we might not be able to boast any mountains but that is not to say that our landscape is particularly flat. Not all of it, anyway.
A while ago, while researching something about hills in chalk downlands, I came across the term “Marilyns”. I thought this was a joke. So, if Scottish mountains are known as “Monros”, some wag decided to call certain hills, “Marilyns” after Marilyn Monroe” – get it?
But “Marilyns” are not a joke, although there is a certain humour in calling them that. The classification was first coined in 1992 by Alan Dawson in his book, “The Relative Hills of Britain” and refers to UK hills and mountains:
…with a prominence of 150m or more regardless of height.
Or to put it another way:
A Marilyn is a hill of any height with a drop of 150m or more on all sides.
Alan Dawson
And so our “local” hill, Walbury Hill is a Marilyn. Although it rises 974 feet above sea level, it is its prominence of 188m or 617 feet above the surrounding hills which is its qualifying factor. Neighbouring Marilyns are Butser Hill in Hampshire at 158m or 518 feet and Winn Hill in Wilshire at 159m or 522 feet.

There are 174 Marilyns in England and a total of 1556 throughout the UK where Walbury Hill comes in at number 107. Perhaps not much of a distinction for a hill that was once classified as a mountain by the Ordnance Survey in the nineteenth century. But we can still boast that our local Marilyn is the highest point in chalk in southern England!
Theresa Lock, November 2023
Sources including:
rhoc.uk/marilyns/
hill-bagging.co.uk/Marilyns.php

