According to this essay:
Kubrick's film claims the Overlook Hotel is built on an Indian burial ground, though this is only mentioned in passing. King's Pet Sematary (1983) does feature such a burial ground, but this novel does not.
We are given few hints to the root of the hotel's evil, if there is a root. King has suggested that the Overlook is a kind of extension of hell, or a pathway to it. By hell, we mean the idea of hell, whatever that means to you.
It's definitely intimately involved with the hell of the mind and the idea of hell on earth. How precisely the Overlook came to be such a place, or how the problems might be connected to the land, are up for interpretation.
