Pipes, conduits, gears, gas nozzles, flares, huge rigs for sifting through dust, hovering vehicles, odd lights, electromagnetic towers: the author offers fascinating if far-out explanations of the oddly-shaped craters, ray patterns, and other peculiar phenomena of our presumed dead satellite. Who They are the author does not say, but be there (in their mechanical bodies) They must: mining the moon for precious ores, conducting genetic experiments on earth (thus Leonard proposes the sudden appearance of Cro-Magnon man), sucking water from Canadian lakes for their dry homes under the craters. The author developed his theories through long hours of watching both the moon itself and lunar probe photos, with a few helpful hints from pseudonymous mavericks within the NASA organization, who are also unable to find any other convincing explanation for some of the odd traits exhibited by our closest planetary neighbor. (There is evidence that the moon itself is one gigantic man-made satellite!) In fact, the author suggests the US and Soviet military planned their space missions jointly: a fantastic notion, but not as fantastic as his amazing (but intriguing) theories.