id like to know what they have hiding under there as well,   if you're lucky enough to find any info they buried the entire original airport and built what you see today. that was all over the news back then Edit: I'm not talking about Stapleton Airport,  thats not D.I.A. The original D.I.A. is in the current location of D.I.A.  upon it's completion they claimed there was too many issues and couldn't be used so instead of tearing it down they buried the structure and built the current building on top using the original structure as a foundation