the unfinished obelisk
All the granite statues , shrines , obelisks and gates all over Egypt , even the granite blocks used in building the pyramids have been taken from the granite quarries in Aswan .
it's from this site that archaeologists try to get information about the techniques that the ancient Egyptians used in buildings such great obelisks .
Given the primitive soft-metal tools of the ancient Egyptians, the obelisk in the Northern Quarry shows us an amazing feat of technology and archaeologists have learned much about the techniques of stone-cutting from examining this abandoned monument and from the tools which have been left behind. It would appear that the stone, which measures 42m in length and would have weighed around 1216 tonnes, developed a flaw during quarrying and was never completed, left to lie still attached to the rock for the next 3000 years. It has been a tourist attraction for almost as long.
The Northern Quarry is an fascinating place to visit for those interested in early technologies. It is famous for producing the granite used in the construction of the burial chamber of the Great Pyramid of Khufu as well as some of the casing stones in other pyramids. Every rock face shows the imprint of ancient stone workers with many cut-marks or artists sketches still to see. You can almost believe that the workmen have only just put down their tools and gone home for the night.