I think it was Danny Peary who pointed out that main problem with this entry is that so many of Harryhausen's creations here are retreads: the trogdolyte is too much like the cyclops from 7th Voyage, the ghouls are too much like the skeleton army in Jason and the Argonauts, the walrus is too much like the Archelon in One Million Years BC, and so on. This was the first Harryhausen film I'd ever seen, and with the exception of Earth Vs. The Flying Saucers, I think all of his films are better than this one.