Shortest Mountain: Ffynnon Garw {Garth Hill}

Garth Hill (usually called The Garth, or Garth Mountain, Mynydd y Garth in Welsh) is a hill located near the village of Pentyrch in Cardiff. It is thought to be the inspiration for "Ffynnon Garw", the fictional mountain (or hill) featured in the book, and later, film, The Englishman Who Went Up a Hill But Came Down a Mountain by Christopher Monger.
The Garth can be seen near enough all over the Welsh capital city of Cardiff, and on a sunny, clear day as far as Weston-super-Mare across the Bristol Channel in the South West of England. It lies adjacent to the Taff Vale with the village of Pentyrch on one side and looks down onto the small village of Gwaelod-y-Garth. The Garth has a number oftumuli on its top [1]. These date from the early to middle Bronze Age, around 2000 BC. They are burial sites.
A book was written about "Ffynnon Garw" which was made into a film The Englishman Who Went Up a Hill But Came Down a Mountain (1995). The location of Ffynnon Garw rather implies it is The Garth; however, the story is fictional. The popular movie has resulted in a stream of visitors climbing to the summit of Garth Mountain to view the location.

Source:http://en.wikipedia.org/wiki/Garth_Hill