Hi Folks: I found a small plastic cap on the passenger side of the rear bumper. I pulled it open and it looks like a metal "pipe" attached to the "frame". I imagine this is for wiring, maybe a rear camera mount?
In the polystyrene tray in the boot sorry trunk you will find a ring with a thread on it . you screw that into the thread in bumper recess and tow your friends..
That ' bit of pipe' is attached to a reinforced part of the chassis with a plate and is one place where the tow bar attaches.