The deepest cave in Wales and the United Kingdom is the ‘Ogof Ffynnon Ddu’ cave: 274.5 metres.
Longest Caves
- Ogof Draenen | Length (km): 70 | Vertical Range (m): 151
- Ogof Ffynnon Ddu | Length (km): 60.644 | Vertical Range (m): 291
- Agen Allwedd | Length (km):32.8 | Vertical Range (m): 160
- Ogof Daren Cilau System | Length (km): 28 | Vertical Range (m): 232
- Dan-Yr-Ogof | Length (km): 16 | Vertical Range (m): 150
All Caves Located in England | All Caves Located In Scotland
Cathole Cave
Dan yr Ogof
Ogof Agen Allwedd
Ogof Craig a Ffynnon
Ogof Draenen
Ogof Ffynnon Ddu
Ogof Hen Ffynhonnau
Ogof Hesp Alyn
Ogof Llyn Parc
Ogof Nadolig
Ogof y Daren Cilau
Otter Hole
Porth yr Ogof
Goldsland
Kendrick’s Cave
Paviland Cave
Cefn Caves
Llygad Llwchwr
Long Hole Cave
Coygan Cave
Location: near Laugharne, Carmarthenshire, Wales