Some of the world's earliest cave art, including the oldest-known hand stencil drawing, is degenerating at an "alarming rate" due to climate change, according to a new study.

By dating popcorn-shaped mineral formations on the walls and ceilings of Indonesian caves, researchers reveal that a series of hand stencils and pig paintings are some of the oldest cave art in ...

The NGA's curator of Australian prints and drawings, Anne McDonald, told the Sydney Morning Herald that the gallery had focused on Melbourne because it was the most "dynamic" area of stencil art.