Some Pottokas wear a thick leather belt with a bell around their neck.
In the earlier days the smugglers pressed grass in the bells of their horses
so nobody could hear their bells while they were transporting smuggled goods.
If it was not possible for them to avoid a contact with the border guard,
they let their horses run away into the darkness.
Sooner or later the grass fell out of the bells and the smuggler could find their horse again.