It is a limestone relief carving, about the size of a small coffee table. It’s rectangular and it shows two human figures. A man stands holding a blazing torch over the kneeling figure of a woman. Both are elaborately costumed, with wonderfully extravagant headdresses. So far, so innocuous. But when you look more closely at the woman the scene becomes horribly disconcerting, because you can see that she is pulling a rope through her tongue – and the rope contains large thorns which are piercing and lacerating her.

Neil MacGregor, A History of the World in 1…, loc. 803