Sounds like a great trip.
First thought is looks like Dry Creek Trail territory.
It's not on the Dry Creek Trail but I'm not very far away from it.
Anyone? The trail pictured is part of an off main road alternative to get from Adelaide to Mawson Lakes. I ride it quite often, just for a bit of variety.
Best that I can come up with is Walkley Heights about opposite Yatala Prison - with the Dry Creek Trail the path on the other side?
I'm quite a bit further away from Dry Creek than that, about 2km as the crow flies. It's relatively flat country.
Little Para trails then, as they are that surface with transmission lines overhead. Only ridden along there twice to date, e-searching needed to locate where.
Nope. Southwards, not northwards of the Dry Creek drainage.
The clues have been leading me to guess it's in the wetlands between the Salisbury Highway extension and the rail yards.
You're in the right area, just need to find the post I'm leaning my bike on.