the red north pyramid of dahshur of king sneferu, named for the rusty reddish hue of its red limestone stones, also called the bat

africa ancient antique bat bent burial cairo called ceiling chamber chambers cheops corbel dahshur desert egypt egyptian giza great heritage history hue khafree khufu king kingdom limestome limestone monument mortuary named necropolis north old passage pharaoh pyramid pyramids red reddish retro rock ruin rusty sand sinfro sneferu stone stones temple tomb tourism travel tura unesco vault vintage world