Pyramids of Giza, Egypt. Early photograph, dating from around 1880, of an area of excavation and rock-cut tombs (foreground) near two of the pyramids at Giza, Egypt. The Sphinx is at centre right, mostly buried in sand. The pyramid at left is the Pyramid of Khafre (136 metres tall). The pyramid at right is the Pyramid of Khufu (146 metres tall). Both pyramids and the Sphinx date from the 26th century BC and are made from limestone, with granite also used for the pyramids. The third of the Giza pyramids is not seen here. The photographic printing technique used here was autotypy, with the resulting photograph called an autotype.