When the Smithsonian discovered an ancient Egyptian colony in the Grand Canyon

When the Smithsonian discovered an ancient Egyptian colony in the Grand Canyon: "Did Egyptians cross the Pacific Ocean and wander the American Southwest thousands of years ago? In the early 20th century, claims of such a discovery were made by two Smithsonian-funded archaeologists, who spoke of a thriving civilization tucked within a series of caverns carved into the side of a remote portion of the Grand Canyon. What did the archaeologists find? What evidence did they bring back?"