L:1500
V:85

Ogof Hesp Alyn, OHA


NGR: SJ 19180 65520
200 m.asl

Flintshire , North Wales
map using leaflet map:
Cave
Access Gated though not usually locked. Current Access arrangements
Description The entrance is an 8m pitch leading to phreatic cave that resurged at the entrance until mining lowered the water table. Can flood through in high water conditions. A major North Wales system with a vertical range of 85m.
History 1973 NWCC
Hydrology
Conservation
SSSI: 0241 Alyn Valley Woods and Alyn Gorge Caves GCR: 569
Survey
Appleton 1989
References
Logbook 1 (1964-74), Jarratt,A.R.p.147-150, dig and early exploration
BCRA Transactions 1(1), Appleton, P (1974) pp.29-42 Subterranean courses of the River Alyn, including Ogof Hesp Alyn, North Wales
Belfry Bulletin, 421, Dec 1983, Trevor Hughes, Ogof Hesp Alyn
The Caves of North East Wales, Ebbs, Cris , June 2000
Cris Ebbs Caves of North Wales
Cambrian Cave Registry entry 1391
© Cambrian Caving Council ⓗ 2017