I love this painting by Aboriginal artist Clem Abbott.
Example of “x-ray” style of art most commonly seen at the top end. This one is “Ngarrbek” (Echidna) by Samuel Namundja.
“Dot” style paintings done by Aboriginal artists near Alice Springs. This one is “Goanna Dreaming” by Malcolm Jagamarra Maloney.
This one was painted by George Bush Tjangala.
Ancient cave art; you can see good examples if you visit the Northern Territory.