Giant insurgents' bunker found in Iraq

According to CNN, it was 503,000 square feet, or approximately nine football fields in area.

TexasGal in the comments section at Adventures of Chester asks a salient question re: the giant bunker: "It's likely there are other such bunkers. I'd add just one more question about this bunker and others that may exist - were they included in the UN weapons inspection or the Iraqi Survey Group?"