> “Tough place to tunnel,” [Boring Co. President] Davis said. “If we were optimizing for easiest places to tunnel, it would not be here. You have extremely hard

> “Tough place to tunnel,” [Boring Co. President] Davis said. “If we were optimizing for easiest places to tunnel, it would not be here. You have extremely hard rock, like, way harder than it should be … But it’s an engineering problem that’s fairly straightforward to solve.” Don’t forget that you’re doing this in a river valley. But no worries, it’s just a straightforward engineering problem.