I've been trying to get this shot for a while, but there are normally too many trees around signs like this.
This was on the way back from shooting some Milky Way shots near Murbko, in SA, and was taken at the side of the Sturt Highway just South of Blanchetown.
Nikon D7000, Sigma 10-20mm at 10mm (F4) for 30secs at ISO4000.
Cheers