When Giles Angarth disappeared, nearly two years ago, we had been friends for a decade or more, and I knew him as well as anyone could purport to know him. Yet the thing was no less a mystery to me than to others at the time, and until now, it has remained a mystery. Like the rest, I sometimes thought that he and Ebbonly had designed it all between them as a huge, insoluble hoax; that they were still alive, somewhere, and laughing at the world that was so sorely baffled by their disappearance. And, until I at last decided to visit Crater Ridge and find, if I could, the two boulders mentioned in Angarth’s narrative, no one had uncovered any trace of the missing men or heard even the faintest rumor concerning them....