With Eannatum's victory over Kish we must probably connect the success which he achieved over another northern city, Opis. For towards the end of the text upon the foundation-stone referred to above, these achievements appear to be described as a single event, or, at least, as two events of which the second closely follows and supplements the first. In the course of the formulæ celebrating the principal conquests of his reign, Eannatum exclaims: "By Eannatum was Elam broken in the head, Elam was driven back to his own land; Kish was broken in the head, and the king of Opis was driven back to his own land."[32] When referring to the victory over Opis in an earlier passage of the same inscription, Eannatum names the king who attacked him, and, although he does not give many details of the war, it may be inferred that Opis was defeated only after a severe struggle. "When the king of Opis rose up," the text runs, "Eannatum, whose name was spoken by Ningirsu, pursued Zuzu, king of Opis, from the Antasurra of Ningirsu up to the city of Opis, and there he smote him and destroyed him."[33] We have already seen reasons for believing that the king of Kish took an active part in Umma's war with Lagash, and shared her defeat; and we may conjecture that it was to help and avenge his ally that Zuzu, king of Opis, marched south and attacked Eannatum. That he met with some success at first is perhaps indicated by the point from which Eannatum records that he drove him back to his own land. For the Antasurra was a shrine or temple dedicated to Ningirsu, and stood within the territory of Lagash, though possibly upon or near the frontier. Here Eannatum met the invaders in force, and not only dislodged them, but followed up his victory by pursuing them back to their own city, where he claims that he administered a still more crushing defeat. It is possible that the conquest of Ma'er, or Mari, took place at this time, and in connection with the war with Opis and Kish, for in one passage Eannatum refers to the defeat of these three states at the Antasurra of Ningirsu. Ma'er may well have been allied with Kish and Opis, and may have contributed a contingent to the army led by Zuzu in his attack on Lagash. [Illustration: PORTION OF A BLACK BASALT MORTAR BEARING AN INSCRIPTION OF EANNATUM, PATESI OF SHIRPURLA.--_Brit. Mus., No._ 90832_; photo, by Messrs. Mansell & Co._]