Ogof Llyn Parc
Ogof Llyn Parc usually known as Pool Park is a cave on Esclusham Mountain above Wrexham, Wales, that has a 100 metres (330 ft) entrance shaft, normally descended by winch to the mine levels. Further caving and two ladders reaches the natural cave levels in which there are streamways.
Cave data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).