Playing at being a conspiricy theorist for a moment.

Is it possible that the person who was responsible for distributing the fill
around the tunnel former is a resident of GX and accidentally on purpose
overloaded the structure to cause a collapse?

Nah, couldn't be. People who live in GX wouldn't know how to get their hands
dirty.

> Nah, couldn't be. People who live in GX wouldn't know how to get their hands
> dirty.


But (s)he could be the deciding individual overseeing the person who
does!