They found the mysterious object that's blocking Bertha  1

Engineers finally found what’s blocking Bertha, the world’s largest tunneling machine under Seattle. A relatively small steel pipe!    Take a look at the image after the jump…   Image © WSDOT

Here’s a photo of the mysterious “object”, the pipe.



“Crews removed enough dirt and water from my excavation chamber to peek inside. Here’s what they saw:”

They found the mysterious object that's blocking Bertha  2

via gizmodo