Ever wondered why so many Cathedrals are build in hollows, rather than on prominent hills? Think of St Davids. It’s because freshwater springs spring up on low ground and these springs and wells were often ancient sacred sites.
In Llandaf, it’s easy to miss as you walk down the hill alongside the Cathedral, but this well may be the reason the Cathedral was built here in the first place.
St Teilo was the second Bishop of Llandaf and was one of the three original Celtic saints cited as the inspiration for the establishment of the original church here.