Building a paper mache wall

Alternately titled: "How to build a paper mache wall", "building a paper mache cave", "how to build a paper mache cave", "Building a paper mache cave and living in it for fun and profit", "Its the Internet, damnit, why do I care?"

Back in 2001, I built a giant paper mache cave for the House's occasional Halloween party. It was much enjoyed by all and I figured other people had probably done it by then, but somehow NOBODY had ever put up instructions on how to do it on the Internet.

This was 2001, was such a thing possible?

Apparently so. Its 2003 now and the above titles fail google, so I figure that I've still got a few tricks left to teach you surly bastards. Ready? Ok.

[next: stuff you'll need]