It's more than just a hole. There's a whole lot going on down here.
This photo was taken recently from the bottom of the Euclid Creek Tunnel shaft 1 in Bratenahl. The photographer is standing 200 feet below the surface at the location where construction of the tunnel began back in 2012. Here's what that looked like:
Digging wrapped up in August and the Euclid Creek Tunnel is scheduled for completion in 2015.