Walkers Crossing Track to Innamincka

Recently had the pleasure of travelling this area and really enjoyed it. We traveled south from Birdsville, onto the Walkers Crossing Track, over the bridge, and due to road closure ended up at Moomba then onto Innamincka. The number of resource industry "No Public Access" roads seemed to confuse my GPS and to be quite honest it was not on its own in the confusion stakes. Does anyone have a GPS reading of where the Fifteen Mile Track and Walkers Crossing Track meet? Or some other information which would assist in identifying this location? Thanks.