a) While I have noted such things as Tutenhkamun's tomb as an inspiration as well as the Egyptian tomb scene from Tintin and the Cigars of the Pharoahs,
I also think that the strange tomb from the Jack Kirby's The Eternals plays a part where we discover the giant sculpture of a space craft, as well as curious three passenger descent vehicle, and later another aerial vehicle.
This would help inspire the garage with the various vehicles that Ridley imagined being like a strange temple or tomb
b.i) Double page spread The Eternals #1, July 1976
Perhaps that's something that could be seen hanging like the landing leg in the Claw room
b.iii) The chamber with a small aircraft hanging from ceiling from the tomb in #2 in a scene where a crypt door is being opened
The panels here are not shown as they are in the Eternals comic book but they are in the right order
b.v.1) A following panel would show a giant Celestal seen in the distance hovering in the distance over a plinth in #3 and perhaps it too looks almost like some sort of giant hanging idol