What are the main supernatural events described within The House on the Borderland?

The main supernatural events in 'The House on the Borderland' include the narrator's recurring out-of-body experiences. He journeys to a 'vast plain' with a 'gigantic ring of dull-red fire' [1], encountering 'Beastgods' [1] and hostile 'Swinecreatures' [1] that later attack his house.

He also experiences extreme time acceleration, causing his dog to 'crumble into a mouldering heap of bones and dust' [1] and revealing his own body as an 'ages-dead' mound [1]. Additionally, he is drawn to the 'Sea of Sleep' to reunite with his deceased love [1] and is compelled by an 'immutable power' to open a bolted door [1].

Space: The House On The Borderland