Which Red was it?

Hello all,
A few months ago now the family and I went up to Birdsville and beyond for a bit of a holiday. One of the items on my bucket list was to climb Big Red. I thought I'd done this, but now I'm not so sure.

Was it Big Red or Little Red????

We headed out from Birdsville on the usual route, passing the cemetary turn off on the right. Eventually we came to an old red coke fridge which the locals had told us was the start of the flood detour. At this point, directly infront of us was an information board and a small shade shelter on the left. Further on, across about 400 metres of water was a dune with a track up the front of it.

So we turned left, followed the flood detour around a lake and headed back along the eastern side of the dune we were stopped short of. Once we realligned ourselves with the road, we went up the dune.

We had a GPS with us but I didn't even think to log the co-ordinates. I've looked at our photos and compared them to others on the net and in some cases it looks like Big Red, yet in others...it doesn't.

I understand that Big and Little Red are essentially the same dune, just different crossing points. Still....if it wasn't Big Red... I've just got to go back and do it again...the right way. At what point did we go wrong? Did I miss a turn off?

Fab.