Short Story - The Stories of Borges

A man, of considerable means I later learnt, bought it from me about three years ago. When I handed the copy over to him, he flipped casually through it, like most people do when they buy a book. As the pages fluttered past the grasp of his ... I had a few drinks at the bar and returned to my hotel late at night and that is when I remembered Corbett again. Wasn't there a story in which he describes mysterious lights up a mountain in the dark? Almost exactly the kind of ...