This has a higher concentration of fascinating Celtic nonsense in a few short paragraphs than anything I've read in memory. As mentioned in my updates, the black and white photos of rocks sometimes seem totally unrelated to the stories they inspire, but they spur wild surmises about monsters, submerged cities, haunted bells, cursed wells and far, far more. The nonacademic author mentions that he went from town to town, revealing details of the town's geography which the townspeople themselves didn't know. Given how credulous he became regarding the discovery of King Arthur's headstone, this may be a brilliant work of fiction.