Pictured here is the machine’s screw conveyor, which moves excavated soil from the front of the machine to the conveyor system. What will happen to all the dirt? We can only imagine.
A Closer Look at Bertha
At the media preview on Saturday, July 20, Seattle magazine editor in chief Rachel Hart toured Bertha's dig site with photographer Stuart Isett. The 57.5-foot diameter cutterhead can swallow boulders 3 feet in diameter.