Christopher Priest - A Dream of Wessex and dreams of the 20th century
I came to A Dream Of Wessex via a trail of cultural breadcrumbs dropped by Rob Young in his book Electric Eden (it's featured towards the end of the book and connected to his visiting of a Ghost Box event which he describes as subterranean and an "exercise in consensual hallucination"... the connection between it and the book shall hopefully become clearer as you read down the page).