Cherrybrook to Dural

A few people might know of a fire trail behind Cherrybrook fire trail, I've only explored it breifly, in fact it was one of my first off road rides.
I've heard that you can get from here, down into the valley and up onto the plateau which Dural is on, i've heard it might pop up towards the top of the quarry road track?

Just if anyone knows about it, just looking for a way to link the Cherrybrook and Quarry road rides up.

Cheers!
Chris