6. The Caves of the UK

The honor of being the deepest cave in the UK goes to Ogof Ffynnon Ddu in Wales which has a network of passages running for 30+ miles and goes to a depth of just over 1,000 feet. England’s deepest cave is Peak Cavern (814 feet), Scotland’s deepest is Cnoc nan Uamh (272 feet) and the deepest cave in Northern Island is Reyford Pot (633 feet). The Easegill System in Yorkshire is the UK’s longest cave network and runs for approximately 45 miles.

Coldest Place in the UK
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