Didgeridoo stems are collected by tapping the sides of tree saplings to test if they emit
a hollow sound. They are then collected and the centres cleaned out of the loose
material left by the termites. The bark is then removed usually leaving a smooth
surface that leaves little further preparation before painting.
Termites are heat sensitive and will only hollow out a tree up to a certain point below
the exterior before they leave and move on to the next tree.