Never seen one before

[Stephen Johnston]

About a year ago I was in the bush around Lithgow nsw and came across a lizard which in shape and size looked like a large blue tongue but the pattern and colouring was very similar to a diamond python. I've never seen one before and was wondering how common they are.
Thanks

 

[El3ctric E3l]

https://www.inaturalist.org/check_lists/51797-Lithgow-Check-List
You might find the animal you're looking for here.