Ryde Ride

I was heading out to ride at Wisemans on Sunday morning however hit the rain on the M2 about Beecroft and thought better of it - so headed back to the city via the Beecroft turnoff and down Epping road. Right at the top of Epping Road there was a bit of reserve and I saw 2 mountain bikers coming out of what looked like dense bush onto the road. I wondered if anyone knew whether this was real riding tracks or these guys could have been bush bashing?