I'm not really addicted to airfield circuits, but accidentally stumbled about this Australian one - so far unknown to me:
http://www.speedwayandroadracehistory.com/lowood-airfield-circuit.html
![Lowood Airfield Circuit 1957-110](https://i.servimg.com/u/f72/15/79/59/60/1957-110.jpg)
https://en.wikipedia.org/wiki/1965_Lowood_4_Hour
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So long.
Jeannomiller