National Showcaves Centre by Matthew Ernst (Wales Photo Spot)

National Showcaves Centre for Wales is a 17-kilometre long cave system. There are 3 different caves Dan-yr-Ogof, Cathedral Cave and Bone Cave each offering a unique underground experience. In Dan-yr-Ogof you walk through the beautifully decorated passageways for just under 1 kilometre, or walk through the enormous passageways of Cathedral Cave, carved out millions of years ago, and at the end of this cave experience the excitement of walking behind the 40 feet high waterfalls that cascade around you in the ‘Dome of St Paul’s’, an atmospheric end to a truly wonderful cave. www.showcaves.co.uk (Brecon Beacons National Park, Wales)