The reading si-dù – “standing horn” – of the two elements composing the spelling SI.GAG, instead of na-rú – “standing stone” – hints at the fact that the Sumerogram originally referred to an object with round section and vertical development, with an approximately conical shape. Thus, “betyl” instead of “stele”. The analysis of the Eblaite names for sacred stones and of the passages were the Sumerogram si-dù is attest¬ed, in the ritual and administrative texts, confirms that this hypothesis is adequate.