02/24/2015 02:08 EST | Updated 04/26/2015 05:59 EDT

Toronto's mystery tunnel: What's it for?

The Toronto Mystery Tunnel of Secrecy has just about everyone stumped. Even after the police news conference this morning, people have more questions than answers. 

Who dug this tunnel? Or is it more a trench? When did all of said digging happen? What purpose does this structure serve? 

Just… why? 

RELATED GALLERY: Inside Toronto's mystery tunnel