This is an Egyptian obelisk that the work was not completed with, perhaps to discover defects in the rock-cut from it or for any other reason, so it became a remaining witness to the way the obelisks were carved .. lest someone tell us that those who built it descended from the sky, as they say about the pyramids that we have their full lineage since they were mastabas and terraces Imperfect pyramids and even pyramids with wrong measurements remained a witness to the ancient Egyptians ’adoption of the principle of (trial and error) that led the European renaissance after the age of the pyramid builders four thousand years ago.