These were intended to be burial places for Khufu himself and were encompassed with water by a channel brought in from the Nile.[47] Herodotus later states that at the Pyramid of Khafre (located beside the Great Pyramid) the Nile flows through a built passage to an island in which Khufu is buried.[48] Hawass interprets this to be a reference to the "Osiris Shaft" which is located at the causeway of Khafre, south of the Great Pyramid.[49][50]
Herodotus described an inscription on the outside of the pyramid which, according to his translators, indicated the amount of radishes, garlic and onions that the workers would have eaten while working on the pyramid.[51] This could be a note of restoration work that Khaemweset, son of Rameses II, had carried out. Apparently, Herodotus’ companions and interpreters could not read the hieroglyphs or deliberately gave him false information.[52]

Diodorus Siculus
Between 60 and 56 BC, the ancient Greek historian Diodorus Siculus visited Egypt and later dedicated the first book of his Bibliotheca historica to the land, its history, and its monuments, including the Great Pyramid. 