Garth Mountain

Garth Hill
View of the Garth Mountain
Highest point
Elevation	307 m (1,007 ft)
Prominence	211 m (692 ft)
Listing	Marilyn, County top
Coordinates	51°32′35.66″N 3°17′41.53″W / 51.5432389°N 3.2948694°W / 51.5432389; -3.2948694Coordinates: 51°32′35.66″N 3°17′41.53″W / 51.5432389°N 3.2948694°W / 51.5432389; -3.2948694
Geography
Garth Hill Location of Garth Hill in Wales
Location	Cardiff, Wales
OS grid	ST103835

Garth Hill (usually called The Garth, or Garth Mountain, Mynydd y Garth in Welsh) is a mountain located near the village of Pentyrch in Cardiff. It was 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 from nearly the whole of the 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 villages of Gwaelod-y-Garth and Taff's Well. The Garth has a number of tumuli on its top. These are burial sites dating from the early to middle Bronze Age, around 2000 BC. There are also World War II practice works (sources unreliable).

Fine views of Cardiff and the Taff valley are obtained from the prominent crag. The Garth has a sister hill, the Lesser Garth. The Lesser Garth is of limestone, which is extensively quarried, with much of the hill now removed; it was also formerly mined for iron ore. The valley between the two is eroded in softer Coal Measures, shales in the main, while the Garth itself is formed of the resistant Pennant Sandstone formation. Until the 19th century, the valley and the lower slopes of the Garth facing Taff's Well were full of small coal mines which fed the ironworks below in the River Taff valley, opposite Taff's Well. There is now little trace of these although one, Lan Colliery, has recently had its portal partly restored as a memorial to an explosion in 1875. A cleared path now leads to this, near the primary school.