Corrected entry: In the scene where Indy is fighting the Nazis who are loading the Ark on an aeroplane to ship it back to Germany, the aeroplane is of a flying-wing design. Flying wings were an American invention (Jack Northrup); the Nazis did not begin trying to build them until very late in World War II. (01:15:50)
Corrected entry: As Indiana and Marion escape the Well of Souls (via pushing the large stone block at the end of the mummy tomb adjacent to the Well), there is a person distinctly propped up against the side of the stone walls, apparently napping. Even if this was supposed to be a watchman/worker falling asleep on the job, why didn't he notice the crunch and rumble and resulting loud THUD of a stone block being moved not ten feet away?
Corrected entry: In the big chase scene where Indy is driving the truck a Nazi manning a stationary gun on the back of another truck fires several rounds point blank into the tarp covering the cargo hold of Indy's truck until he rams them off the road. That tarp must be strong since they show no bullet holes for the rest of the scene.
Corrected entry: In the very first scene of the movie when Indiana Jones comes back to Marion to save her from the bad guys, he snaps his whip on one guy, then pulls out a gun. Indiana Jones is invincible, but still it's a little hard to believe that even the great Indiana Jones can make a 6-shooter shoot 10+ times.
Corrected entry: When Indy drops the Staff of Ra in the hole to the map room, you can hear a very distinct "clank" when the rod hits the ground (as if it were made of metal, not wood, since Indy breaks the staff over his knee later in the scene).
Corrected entry: Throughout the entire movie you can see normal German army military, which is nonsense because these historic artifact-projects Hitler pursued were handled by the SS and not by the army.
Corrected entry: When Indy is in the Map Room looking at his book, comparing the map room to what he sees, there is a wedding ring impression - when you take your ring off you have a tan line. Also in that scene there is a suntan line on one of his fingers of a plaster/bandaid.
Corrected entry: When Indy threatens to blow up the Ark, at moment when Belloq says "okay Jones you win" you can see in the background Toth (dressed in black) sitting on the rocks next to two German soldiers who have Marion as a prisoner in between them. But when Belloq grabs a machine gun from one of the other soldiers and tells Indy to blow up the ark, Toth has disappeared and there is just Marion and the two Germans soldiers (no Toth).
Corrected entry: When the Well of Souls is opened it makes a vacuum sound. This would be impossible if the snakes were entering from outside, or if they were to survive.
Corrected entry: During the process of escaping from the Well of Souls after being entombed there by the Nazis, Jones ends up shoving out a large concrete block from the inside of an aboveground concrete structure, through which Jones and Marion crawl to freedom. How is it that the Germans and Belloq wouldn't have thought to investigate this aboveground structure themselves in their search for the Ark?
Corrected entry: Indiana Jones escapes capture on the England-bound cargo ship by swimming to a nearby German U-Boat. After we see Jones climb aboard the deck of the U-Boat and salute the captain of the cargo ship, there is a sequence of scenes showing the German U-Boat crew preparing to submerge the ship. Even if Jones miraculously managed to get inside the ship undetected, he would not have been able to find a hiding space inside the cramped confines of a German U-Boat.
Corrected entry: Why does Indy go all the way to the floor in the Well of Souls and then spray the snakes with petrol to light it. Given his phobia (and general safety precautions - Sallah points out that they are asps and "very dangerous") would he not spray them from above (outside, or hanging from the rope), or even pour some petrol straight down on them, or better still, lower the bucket to the floor and let it tip over. He could easily light it with a dropped torch and never get too near the snakes he hates so much.
Corrected entry: While they are in the German camp around the well of souls, Sallah is trying to blend in with the other native workers. As he passes a long table of Germans eating, a few call out in German for water (Wasser) yet he replies in English "I'll go and get you some water" a number of times. Not very undercover.
Corrected entry: In the fight scene at the airplane, Marion is locked in the cockpit with the dead German pilot (located at the front of the plane). In the next shot when a truck of German soldiers approach, she begins shooting them from the plane's gun turret (a separate cabin located in the rear of the plane). In the next shot, when Indy is done fighting the big German, Marion is once again locked in the cockpit (located at the front of the plane).