Did an ancient civilization live in caves found below the Grand Canyon? Was an Egyptian tomb excavated in the desert of Arizona? According to a front page story from a 1909 edition of the Phoenix Gazette, evidence of an ancient people was discovered in the Grand Canyon region, including a city of caverns, Egyptian artifacts, and a lost pyramid - a discovery that has allegedly been covered up by the Smithsonian Institution.
This isn't the first time the Smithsonian has been accused of covering up or outright destroying evidence of great archaeological discoveries. Most famously, the institute reportedly disposed of thousands of remains of giant humanoid skeletons during the early 1900s, although mainstream news outlets do not corroborate this story; the claim is outright denied by Snopes.com; and the original poster of the story is a noted "entertainment news" site. Be that as it may, the debate over the existence of the giant human remains still continues.
In the same vein, the Smithsonian may or may not have hushed up knowledge that ancient Egyptians once dwelt in Arizona. Is it possible? Is the evidence substantive, or based on conjecture? Although admittedly there is "no tangible proof" that the lost cave city really existed in the Grand Canyon, the theories are fun and compelling. David Hatcher Childress examines the stories - take a look here and consider them for yourself!