During the 1700s, Frederic Norden, a Danish naval captain and explorer, made extensive notes, observations and drawings of everything he saw of interest on his expedition to Egypt, which includes a diagram, map and description of a 4th, now lost pyramid of Giza in Egypt. Watch this video to find out all about the lost pyramid. Did it really exist or was Norden mistaken? All images are taken from Google images for educational purposes only.