Hormuzd Rassam was a native Assyrian and Christian Assyriologist who made a number of important discoveries from 1877 to 1882, including the clay tablets that contained the Epic of Gilgamesh, the world's oldest literature.
After studying at the University of Oxford, he again accompanied Layard (1849–51) and took part in the excavation of Nineveh. Layard entered political life shortly thereafter, and in 1852 Rassam was retained to continue excavating antiquities for the British Museum. At Nineveh, Nimrūd, and elsewhere he unearthed notable sculptures, stelae (carved slabs), and inscriptions. In 1853 he discovered at Nineveh the well-known lion-hunt relief of King Ashurbanipal.
His final efforts (1878–82) yielded important results. About 15 miles (24 km) from Mosul, at a mound known as Tell Balawat, he excavated the palace of Shalmaneser II and found a pair of great bronze gates that are now one of the glories of the British Museum. Possibly his most valuable contribution to Mesopotamian studies was his discovery in 1880 of a tablet of King Nabu-apal-iddin, which identified the site as the temple of the sun god Shamash in the city of Sippar. In the following 18 months Rassam excavated about 170 chambers surrounding the temple and found 40,000 to 50,000 inscribed cylinders and tablets. One cylinder recounted how Nabonidus (reigned 555–539 bc), the father of Belshazzar and the last king of Babylon, had excavated the temple to its original cornerstone, laid 4,200 years earlier by Naram-Sin, the son of King Sargon of Akkad. Rassam recounted much of his work in Asshur and the Land of Nimrod (1897).