Hidden Valley of Porth-Yr-Ogof
We went to Porth-Yr-Ogof yesterday to do a spot of caving. For those who don’t know, it is a very large cave system in Wales which contains the largest unsupported cavern in Europe and 2 miles of tunnels. The valley around the cave is like something out of Jurassic park. It contains a lot of strange looking trees covered in moss.
