...and then there's this offered as an explanation:
Coral Castle has attracted the international attention of professional construction engineers, astounded and mystified by the apparently impossible achievement of this diminutive wonder-worker. In the mid-1970s, for example, a large bulldozer was hired to manipulate a coral block equivalent to the Castle's 30-ton monolith; the bulldozer could not even lift it. Alternative science investigators suggest that Leedskalnin somehow learned the secret of the "world grid," an invisible pattern of energy lines surrounding the Earth which concentrates points of telluric power where they intersect. It was here, at one of these intersections of Earth energy, that he was supposedly able to move his prodigious stone blocks using the unseen power of our planet. In fact, in The Enigma of Coral Castle, Ray Stoner suggests that Leedskalnin moved the Castle not because it was threatened by an encroaching subdivision, but because a surveying error misplaced the site ten miles from an Earth energy vortex or focal point. In order for the structures to maximize this energy, the entire complex needed to be relocated in Homestead, where the telluric forces were focused.
Bruce Cathe, in The Energy Grid, one of the most credible books on the subject, says "the site of Coral Castle is mathematically related to the world energy grid, as are the other remarkable structures which, however, date from ancient times. Ed Leedskalnin had not moved on to the Florida site by chance. This geometric position was extremely close to one that would be ideal for setting up harmonics related to gravity and light harmonics. The fact that [he] had access to secret knowledge is much more evident in the relationship of Coral Castle to the world energy grid system."
Stoner says some fundamental conditions must be met before a structure like Coral Castle can be made to function as intended. It must be exactly situated over an energy vortex, aligned with a celestial event or events sufficiently precise to predict their recurrence, constructed in a specific shape, and built with certain materials. Finally, activities at the site may be successfully undertaken only at the moment the celestial events to which it is oriented take place.
Stoner's prerequisites for particular shapes and building materials are reminiscent of experiments in pyramid power in the mid-1970s, when the precise angles (variants of 15.2 degrees) of the pyramid and its special construction elements (crystalline granite and non-conducting limestone) determined their success. In Using Pyramid Power, James Wyckoff writes,"The ancient Egyptians knew that the shape and angle of pyramids contained a mystical energy force."
