The "Dig Tree"

 As Burke and Wills progressed, they left a support crew on the banks of Coopers Creek to assist them on return from the north.  The support crew gave up hope and left only hours before Burke and Wills arrived back some months later.  The support crew left a blaze on the trees with (ambiguous) instructions to dig for a cache of food left behind.  The blazes have since grown over and research indicates the tree initially designated the "Dig Tree" was the wrong one.  There is now a walkway to the campsite.

The tree originally thought to be the "Dig Tree".

The blaze on this tree is now thought to direct attention to another nearby tree (shown below) where the food was buried.