Mons Claudianus was a Roman quarry in the eastern desert of Egypt. It consisted of a garrison, a quarrying site, and civilian and workers' quarters. Granodiorite was mined for the Roman Empire where it was used as a building material. Mons Claudianus is located in the mountains of the Egyptian Eastern desert about midway between the Red Sea and Qena. Today tourists can see fragments of granite, with several artifacts such as a broken column.