Haunted Mesa is a science fiction novel by Louis L'Amour, set in the American Southwest amidst the ruins of the Anasazi. L'Amour attempts, as in others of his works, to suggest a reasonable explanation for the phenomena attributed to The Bermuda Triangle, i.e., portals between worlds or different facets of this world. The same phenomenon is used, albeit in a very minor way, in his novel The Californios. A useful contrast between the two novels is that in The Haunted Mesa, the Anasazi leadership, who rule both the portals and their people with an iron hand (the Hand and the Voice are two of the leaders), are corrupt and thoroughly evil, whereas the person or people who know about the portal in The Californios are reserved and rather helpful to people they respect. These were different portals however, and did not necessarily lead to the same location.