The first pukumani pole I saw up close stood in the old wing of the Museum and Art Gallery of the Northern Territory, in Darwin. It was taller than I expected — nearly three metres — and its ironwood surface was black as charred heartwood, banded in ochre that had deepened to a burnt orange in the decades since it was raised on Melville Island. The bands were not painted for decoration. They carried the story of the deceased's clan, their skin name, their relationship to country. Each line was a genealogy drawn in earth pigments.

The Mathematics of Mortuary Design

Tiwi artists do not paint arbitrarily. The horizontal registers that wrap a tutini follow strict conventions — a dotted band of pipeclay white, a cross-hatched field of red ochre, a solid stripe of yellow ochre burnt to near-orange. These are not abstract patterns but the visible grammar of mourning, the syntax by which the living express their obligations to the dead.

"The pole stands until it falls. When the wood splits and the ochre peels, the mourning is complete. The country takes the ceremony back."