There are numerous mysteries related to the Great Pyramid of Giza, but there is one which researchers are unable to explain: Why is the Great Pyramid –one of the most precise ancient structures on the surface of the planet— missing a capstone on its top? An interesting story is associated with the visit of Sir Siemens, a British inventor to the top of the Pyramid. When Siemens got to the top of the Pyramid with his guides, he received an electric shock as he tried to drink from a bottle of…