He visited Egypt around 60 - 56 BC. He distanced himself from the descriptions of Herodotus, whom he considered a creator of miraculous tales and myths. In his opinion, as many as 320 thousand workers were engaged in pyramid construction an it took them 20 years to accomplish the task. According to him, the facade of the pyramid bore inscriptions about "the amount of radishes, garlic, and onions that the workers ate while building the pyramid". This inscription was also mentioned by Herodotus.
At the time of Diodorus of Siculus' visit, the limestone facade of the pyramid was still in excellent condition.
