under-seattle-a-big-object-blocks-bertha-what-is-it.html

This article from The New York Times discusses the mysterious object that blocked the progress of the tunnel-boring machine named Bertha, which was being used for a major infrastructure project in Seattle. The article delves into the efforts to uncover what exactly the object was and how it ended up in the path of the tunnel. It explains the various theories, including the possibility of it being a concrete-filled old ship or part of an ancient landslide. The article also highlights the potential impact of this obstruction on the project's timeline and budget. Overall, it provides an intriguing look into the unexpected challenges faced during large-scale construction projects.