Two real-time reviews (among several others over the years) strongly connected with this increasingly preternatural, hawling-relevant question from John Cowper Powys in his ‘The Glastonbury Romance’ (1933):
The Rift by Nina Allan
Rule Dementia! by Quentin S. Crisp
This subject deserves a googling galore.
Other quotes of mine from that Powys book: https://weirdtongue.wordpress.com/quotations-from-the-glastonbury-romance-by-john-cowper-powys/
(Painting by Ade Hodges)
Edit: more in comments below –