Can you find a lost ancient city in the grand canyon? Yes, the answer is yes. The Grand Canyon has thousands of years of history. Explorers will never see some of it. Some of it is traversed by hikers and explorers every day and they are unaware of it. But what about history that has been purposefully withheld from us? Not necessarily concealed to safeguard historical places, but to conceal history since it will change the history that we have all been taught. Is it even possible? Could the Grand Canyon contain a subterranean Egyptian city? There's no denying that Theodore Roosevelt adored the Grand Canyon. He returned multiple times to investigate and enjoy the modern-day region of Lake Powell and the Grand Canyon. He named the Grand Canyon a National Monument in 1908, and the Grand Canyon was designated a National Park in 1919.