National Geographic Archaeology Kit: Egyptian Pyramid, The Secret of the Pyramid. After using hieroglyphics to decipher the secret to unlocking the pyramid, use tools and techniques similar to those of a real archaeologist to carefully excavate a sarcophagus, death mask, and four canopic urns from inside. Open the sarcophagus and you will discover a model mummy preserved within. As you uncover the artifacts in the pyramid, you will learn about archaeological science, including excavation, conservation, dating, and remote sensing. You will also learn about ancient Egyptian customs, hieroglyphics, mummification, and pyramid construction. Investigate the layout of the pyramid, its various chambers, hidden passageways, and security devices by constructing a three-dimensional cross section. Full-color, 16-page experiment manual.