Y Garn Goch
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Y Garn Goch is a hill in the
Towy Valley. It is also commonly known as either Garn Goch or Carn Goch. Current owners and land managers are the Brecon Beacons National Park Authority.[1]
Geology
Y Garn Goch is formed from the coarse sandstones of the Ffairfach Grit Formation of the early
Ordovician period. A northeast-southwest oriented anticline (the Garn Goch Anticline) which runs through Y Garn Goch can be seen to fold these rocks. The sandstones and mudstones of the Abergwilli (sic)[2] and Llandeilo Flags formations form the lower slopes of the hill to north and south. A fault runs northeast-southwest through the saddle between the two tops and is considered a part of the Welsh Borderland Fault System
.
The lower ground is mantled by
Towy Valley glacier. The hill lies within Fforest Fawr Geopark designated in respect of the outstanding geological heritage of the region.[3][4]
Archaeology
The established view is that Y Garn Goch is notable for the two impressive
hillforts of Y Gaer Fawr, (English: the big fort) and Y Gaer Fach, (English: the little fort), together the largest in southern Wales
.
Access
The entire hill is registered common land and hence freely available to walkers as access land. It is approached by minor cul-de-sac roads from east and west and a public footpath runs north-south across it. The Beacons Way which starts at Llangadog passes through the nearby village of Bethlehem before running west-east over the hill en route for the Black Mountain (Welsh: Y Mynydd Du) and eventually Abergavenny.
See also
References
- ^ Ordnance Survey Explorer map OL12 'Brecon Beacons National Park: western area'
- ^ "Abergwilli Formation". BGS Lexicon of Named Rock Units. British Geological Survey. Retrieved 4 July 2021.
- ^ British Geological Survey 1:50,000 map sheet 212 'Llandovery' & accompanying sheet explanation
- ^ "Gaer Fawr, Hillfort on Y Garn Goch". Archived from the original on 27 July 2011. Retrieved 25 May 2009.