A brief history
The Old Bathurst rd trails, which were able to be shuttled by catching the hourly train from Emu plains up to Glenbrook with a bit of pedaling thrown in, were officially shut down just as they looked to gain the nod of approval (council had already engaged riders in some semiofficial maintenance days) ... After other trails popped back into existence and pissed off the locals there was a massive push to ban all trails on the Escarpment and Old Bat became a victim of that
Luckily the Knapsack trail was already written in management plans so the BMORC guys had a bit to leverage off.
As it stands Knapsack is the only official DH trail in the lower mountains. Any other trail that may or may not exist is best left unspoken about on open forums.