Rhedosaurus rampage as Harryhausen genius starts to work. Nuclear testing out in the arctic rouses a prehistoric Rhedosaurs from its icy incarcerated sleep. It promptly lays waste to everything that gets in its path, and its next stop is New York City. The Beast from 20,000 Fathoms stands as one of the most important of the 50s sci-fi/creature feature films that filled the screens during that particular decade. Notable for being the first picture where Ray Harryhausen had total control over the effects (and thus setting his career on an upward route), it is also one of two pictures from 1953…