Marchlyn Mawr

reservoir A reservoir (; from French ''réservoir'' ) is an enlarged lake behind a dam. Such a dam may be either artificial, built to store fresh water or it may be a natural formation. Reservoirs can be created in a number of ways, including contro ...

is a high level

lake A lake is an area filled with water, localized in a basin, surrounded by land, and distinct from any river or other outlet that serves to feed or drain the lake. Lakes lie on land and are not part of the ocean, although, like the much large ...

Snowdonia Snowdonia or Eryri (), is a mountainous region in northwestern Wales and a national park of in area. It was the first to be designated of the three national parks in Wales, in 1951. Name and extent It was a commonly held belief that the na ...

behind

Elidir Fawr Elidir Fawr is a mountain in Snowdonia, north Wales, the northernmost peak in the Glyderau. Its name means 'Big Elidir', named after a legendary warrior king of the 6th century also known as Eliffer Gosgorddfawr (Elidir of the Great Army). To ...

mountain. It is used as the high level water source for Dinorwig power station, a closed-loop pumped storage hydroelectric generating facility. It is said that nearby lies the cave containing

Arthur's Arthur's was a London gentlemen's club, now dissolved, which was established in 1811 and was disbanded in 1940. Between 1827 and 1940 it was based at 69 St James's Street. It is now best remembered for having built the London clubhouse currentl ...

treasure, a source of bedazzlement to the wanderer who sees it, and of disaster to the pilferer who touches it. The lake itself lies in between two mountains Carnedd y Fillast and

and lies at a height of 636m above sea level and the reservoir took four years to build (from 1975 to 1979). The reservoir holds about of water. From the reservoir, a diameter tunnel runs for to a diameter vertical shaft. From the bottom of the shaft, a diameter tunnel leads to the power station, away. It is possible to cycle up the road to the reservoir but a gate at the bottom prevents cars from driving on the road.

References

External links

www.geograph.co.uk : photos of Marchlyn Mawr and surrounding areaTimeline
Llanddeiniolen Reservoirs in Gwynedd Reservoirs in Snowdonia {{Gwynedd-geo-stub