Within fifty miles of Alice Springs there aren't too many caches. And they're not appropriate to our trip. One is in Palm Valley (part of the Western Lobe route we abandoned) and the other one is along the forlorn Stuart Highway, at a Truck Stop which I believe I stopped at last month. Screw that.
Australian Geocaching.com is kind of a crappy site that seems to be a "purposeful community" bolted on, somehow, to the database at the regular geocaching.com. It's not a thing of beauty. However, I used it to see what's in the areas we'll be travelling.
Group 1
Group 2 (too far away...forget them)
The answer is very, very little. If we hoped to entertain ourselves by chasing geocaches around the bush, we'd have been sorely disappointed. I know nearly exactly where both these sites are. Neither are compelling on their own. I couldn't even find any geocaches on the Eastern Lobe route.
So it looks like if we play Geocaching, it'll be us planting the Geocaches, not finding them. Bummer.