This was submitted by ‘evilox2001′ and looks like some good info. How ’bout that cave idea?
“I currently work in Alameda, on the old Navy base where The Matrix 2 & 3 are being filmed. I was able to talk my way into Burley Man (the studios new name) Hanger, where I saw two different sets being built where some future scene of the Matrix 2 is going to be shot. On one side of the hanger they have constructed a city street with a three story apartment building and it looks really good.
On the other side, they built a cave or cavern set which Neo and the rest of the cast will use to get to Zion. These sets are built with a lot of detail. I should have some pictures available soon of these sets, until then.”
Well, any pictures will be greatly appreciated!