There was an attempt, a few years ago , to get the Yass " Marchmont" Dirt Track going again, there were a few club rides on it ,but it ran into horsey people problems, so I believe.
I will be talking to a Canberra club member , who lives in Yass, and see what the go is.
I did ride at Marchmont a few times in the '70s, on one practice day , TD and I snuck the JAPs out onto the outside horsey mile, freakin awesome !!
Foss