He wakes up in a strange house, with a gravel drive that goes nowhere, there are books with titles but blank pages, and there is a garage with a minotaur-like beast in the basement.
He tries to leave by boat, but ends up back at the house, a day or so later, the river seems to go in a circle.
He runs up the hills lining the valley and ends up touching the dome of the sky, peels back a layer of covering, and there is nothing out there.
I remember that the book was an anthology of a 19 year-old author, pre-1989. in English - paperback