Visible crew/equipment: When the hydra comes out of the cave,look closely at the ground. The track the hydra is being pulled across is visible.
Visible crew/equipment: The very first shot of a Harpy attacking the blind man is not up to the high standard of the rest of Harryhausen's work in this film - you can easily see two wires suspending the model as it "flies" down. These are better hidden in later shots.
