Twotall

Question: Is the correct grail made of wood or metal? Was the comment "the cup of a carpenter" referring to the grail looking simple or the substance it was made of? It looks like gilded wood but makes a sound when picked up like it was metal.

Answer: It seems to have had a layer of metal foil applied to wood or clay.

dizzyd

Answer: It is made of wood, possibly with a metal base. The line about it being the "cup of a carpenter" is primarily referring to the fact that it's simple and unadorned, but could also be interpreted to include the material.

Twotall

It was actually made of clay.

Question: It's been stated that Elsa and Donovan knew how to get through the path to the Grail because Henry was talking about the way as he lay dying. But I'm still confused about when they get across the cliff. Indy threw some sand and stones across the path he 'believed' was there, but would they still be sitting there, basically in mid air for the bad guys to get across? Did they truly believe in the Grail as much as Indy and Henry did and so could walk across the non-existant path?

jenn_s_h85

Answer: The bridge was actually camouflaged into rock looking as if it was invisible (you can see this in movie).

Of course, any "camouflage" would only work from one perspective (from the doorway at one end of the bridge). As soon as Indy took a step out onto the bridge, the "camouflage" would be revealed, as it would no longer be aligned to the background from his new perspective. Viewed from the opposite end of the bridge, the "camouflage" wouldn't work at all and the bridge would be perfectly visible.

Charles Austin Miller

Not necessarily. They could have fashioned the stonework so it rendered the bridge invisible from both directions.

The sand and pebbles broke the camouflage of the bridge so when Donovan and Elsa came they would see through the illusion and just see a bridge.

lionhead

Chosen answer: The way I see it, the bridge is there, but is invisible. The true test is to step out into mid-air when you don't know there's a bridge there, trusting in God to rescue you. Indy passed this test, then threw the stones to see whether it really was a bridge there all along, or if it was a matter of faith in the moment you step out (or just to mark his way back). The pebbles stayed, proving the bridge was physical and real, only invisible. When Ilsa and Donovan came along, they could see the pebbles in mid-air, and figured out this as well. Originally, you would have to believe and trust in God to step on to the bridge, but Indy effectively "disarms" this trap by proving that there is a way to cross safely for anyone.

Twotall

As stated previously, the bridge is not invisible. It is simply camouflaged so that it's not visible from the position Indy had to stand. This is demonstrated in the film when the camera angle changes and shows that the reason Indy can't see it is the marbling of the stone lines up perfectly from one angle. He throws the pebbles onto it once he's across to make it easier for him to see when he returns.

But the camouflage is only going to work from one direction (the approach). Going in the opposite direction (the retreat), the bridge would stand out like a sore thumb, pebbles or not.

Charles Austin Miller

However, in the film, Indy turns around and throws the pebbles on the bridge, which is not visible until the pebbles are there.

Maybe, maybe not. Perhaps the original builders altered the vertical stone walls in the "coming back" direction so that the bridge blended from this reverse perspective as well.

Okay, he didn't actually mean invisible, more like "invisible from a certain perspective"

Question: How did Elsa and Donovan get across the second challenge to where the grail was? Indy knew that one had to step on the tiles which spelt Iehovah, but they didn't. I was gonna submit this as a goof, but I am sure there is some logical explanation.

Gavin Jackson

Chosen answer: Dr. Jones senior (Sean Connery) is talking to himself while Indy is going through the traps. He would know what the trials consisted of, and mutters the solutions out loud as he goes over them in his mind. He even makes a statement that "But in ancient Latin, Jehovah begins with an 'I'" just before Indy takes his first step onto the wrong tile.

Twotall

Answer: After Indy falls through the "J" and pulls himself up, you can see Elsa and Donovan standing in the background behind him. It's a very quick shot but they are there. They simply watched him and he didn't see them. Also, Indy called out each letter he stepped on, so they knew the correct path.

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