The large loop on the LHS of the map is the 12k track. I ran it clockwise. The text about getting lost I found today on the website! The mind boggles whether I would have been found if I had "waited where I was".
Here is where I actually ran.
Here is detail of where I was lost
When I looked at where I went, I see that after I had backtracked I was actually on the right track without knowing it, heading in the opposite direction. Then a little anti-clockwise loop brought me back on the actual track. Up and over the same hill, all rocks, where I had first gone wrong, and bearing hard right instead of left, finally I did see the track again. Phewwwww!
Where in the world was I? A rapidly heating up outback Queensland.

It was all guess work. All directions looked the same. Initially I panicked for several minutes, not recommended, then I calmed myself down and made a decision as to what I would do. Backtrack. when I did finally recognise the track, I had no idea which way to go. I wanted to continue on, whichever direction that was. Returning the way I had come would involve scaling three hills again, spending much more time out in the heat of the day, and getting back after the coach was due to leave. I had already stumbled and fallen, I was not very fit as I had been sick for a couple of months too.
But I guessed right (actually, "left") again, and got back before I was missed, I even had time to do another 500m to make the distance up to 16k on the Garmin! As you do.
And just for interest, here is a photo of the very large python we saw on our walk at the lava tubes the previous afternoon!