In 1854 the British Consul at Basrah named J.E. Taylor began an excavation of the ziggurat area. Taylor found four clay cylinders, one at each corner of the ziggurat, which identified the site as Ur.
These cylinders were written for the Babylonian king Nabonidus who reigned from about 555 B.C. to 539 B.C. The text on these cylinders revealed that the ziggurat had been rebuilt by Nabonidus.
Click on this cylinder to read what it says.