The Wainstones are a huge natural rock formation, very popular with climbers
There are vast formations such as one resembling a Sphinx head (note climber in for scale to the bottom right of the photo below right)
There are inscriptions all over the rocks, from very modern graffiti to much older beautifully carved names and dates.
There is an inscription somewhere which I failed to find and photograph that was alleged by antiquarians to be a memorial inscription to a slain Danish chieftain, although other explanations were later given that sounds a lot more plausible.