Visible crew/equipment: During the initial phase of the final assault, a row of men with their backs to the camera is shown. One of these men (right of the center, with a bandaged head) is actually a dummy positioned at the spot where the wall is blasted a few seconds later. (02:29:35)
Visible crew/equipment: During the campfire scene a Morlock attacks Weena, and drags her off. If you look at the top of the frame, as the Morlock drags her away, the stunt man's head can be seen, as he forgot to wear the head part of the costume.
Visible crew/equipment: When the slaves roll the flaming ball down the hill, we see it strike several Roman soldiers. Look closely, they are actually stuntmen dressed in asbestos suits.
Visible crew/equipment: When the three Mexican farmers arrive in town you see the traces in the street from a car making a 3-point-turn in the front of the picture. You see the traces in later shots, too. (00:09:15)
Visible crew/equipment: The string holding up the "Fire Monster" to make it appear like it's standing upright is seen in a couple of shots.