tunnel entrance to the ancient egyptian pyramid. high pyramid of snefru. giza, cairo, egypt. inside the second pyramid. vertical

pyramid tunnel chephren inside khafra old egyptian egypt pharaoh architecture ancient tomb giza landmark sepulchre grave crypt civilization stone khufu wall construction archeology material archaeology culture great destinations building cheops place history corridor hallway hall passage passageway maze intricacy labyrinth labyrinthine entrance entry input dahshur sneferu necropolis monument desert snefru