In August, 1941, at Tura, some dozen kilometers south of Cairo, while work was underway to clear rubbish from a limestone cave, formerly a Pharaonic quarry, in preparation for the storage of munitions for the British army, a small papyrus library of works by Origen (ca. 185–251/5) and Didymus the Blind (313–398) was discovered. In all likelihood, they had come from a former Greek monastery, abandoned since the eleventh century, whose ruins are situated on the plateau