Contractors renovating a historic home in Belgium stumbled upon the entrance to a secret tunnel identified by archaeologists ...

Once completed, the Tonnelle Avenue site will have one of the shafts to launch two tunnel boring machines that will drill ...

Photo from Flanders Heritage Agency Contractors renovating a historic home in Belgium stumbled upon the entrance to a secret tunnel identified ... unearths 2,600-year-old burial site, Greek ...

Once completed, the Tonnelle Avenue site will have one of the shafts to launch two tunnel boring machines that will drill through rock in the Palisades. Story continues below photo gallery.