On November 28, 1981, an American astronaut discovered the underground valley of the Egyptian desert. On November 28, 1981, the United States "Columbia" spacecraft also made the second trial of the 4.5-foot-deep sand layer, and thus obtained this discovery. According to this discovery, the current uninhabited portion of the southwestern desert, the world's most dry underground valley, has caused great interest to Egyptian scientists. This desert region was the land fertile, wind-tempered, humming-watered region for more than forty years, where the signal of the space plane's telescope system can also penetrate the 4.5-foot-deep sand layer, and therefore obtained this discovery. Under this desert, there has been a subsequent