ID on mystery animal

[Venomous_RBB]

My guess is a Bush rat, we had a similiar hole and found a rat inside(not saying it dug the hole but it was certainly making itself at home in there).
Not that you can really tell which animal made which hole

 

[oOLaurenOo]

What ever it is it is old. Doesn't look very used any more.

 

[Shotta]

it was probably home to the elusive Yowie