Brian Patterson wrote:

> Thanks Corp,
>
> [www.flickr.com]
>
> From the link, "Quarry marks inscribed
> on the lower surface of block No. 20. from
> the first of Khufu's boat pits to be opened in
> 1954. Djedefre's cartouche can be seen amongst
> the graffiti."
>
> And later, "Eighteen cartouches bearing
> the name of King Dedefre, the builder of the
> incomplete Pyramid at Abu-Roash were found
> among the quarry marks on the upper surfaces
> of blocks Nos. 15, 19, 20, 23, 30, 34, 35 and 40,
> the lower surfaces of blocks Nos. 5, 7, 9 and 20, the
> northern sides of blocks Nos. 34 and 38, and the eastern
> sides of blocks Nos. 5 and 33 (PI. XI, A)."
>
> and:
>
> "It is obvious therefore, that this king
> had succeeded King Cheops. Consequently,
> the assumption of some historians that King
> Dedefre ruled at the end of the Fourth Dynasty
> is untrue."


I'd like to know the logical basis for the conclusions stated in that flickr description.
The link on that flickr page to Nour's "The Cheops Boat, Part 1" is broken.
I found this one that works: [www.gizapyramids.org]