We haven't heard much about the elaborate tunnel complexes in Afganhstan lately either. They were full of terrorist documents, bomb making equipment, bio and chem weapons, parts of a nuke reactor, and maps of every American city and major transportation routes including train and subway schedules. These things are so sensitive and secret that the information will probably never be released for national security reasons.
Richard W.
Afghan tunnel complex in Tora Bora was reported in detail during December, 2001. The ones in Baghdad was not. Just a couple of brief reports with no detail. So even if there is nothing in them, it does not dent any American credibility much. They were not tied to the rational for going to war in advance. Nobody knew what is in there or the extent of the complex.