Cambrian Cave Registry

L: V:	Gilwern Hill Sink Bach NGR: SO 24751 12251 408 m.asl Monmouthshire , Northern Outcrop - East (Morlais to Abergavenny)			map using leaflet map:
Sink
Access	A track can be followed from the road at Pwll Du towards the Pwll Ddu quarries. The sink is located on the eastern side of the track before the quarries are reached.
Description	A small stream flows across the track to sink in a depression to the east.
History
Hydrology	+ve to Ogof Draenen (Gascoine, 1995)			Tests
Conservation	SSSI: 0380 Gilwern Hill (Mixed)
Gallery
^{Brendan Marris} 2009
Survey

References
BrynmawrCC Jnl.1996. Bill Gascoine, Dye tracing in Ogof Draenen
CKS v38(1), p.24, 2011,Lou Maurice & Tim Guilford, The hydrogeology of Ogof Draenen
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Cambrian Cave Registry entry 1760			© Caving Wales ⓗ Ogofa Cymru