Jiayuguan Pass is located about six kilometers (four miles) southwest of Jiagyuguan City, the Jiayuguan Pass represents the western starting point of a section of the Great Wall constructed during the Ming Dynasty (1368-1644). The pass covers an area of 33,500 square meters (eight acres) and lies at the base of a narrow valley, and takes its name from one of the surrounding hills, the Jiayu. Commonly referred to as the finest example of its kind on earth, the pass is the best preserved of the Great Wall's ancient military fortresses. so it earned the name “The First And Greatest Pass Under Heaven.” The Jiayuguan Pass was constructed as far back as 1372. Legend has it that the official charged with overseeing the building of the pass demanded that the foremen not squander a single brick. The builders were for the most part successful, and the project was finished with just one brick surplus to requirements. It was actually left at the site and has become famous among the tourists visiting the area. The Mogao Caves, or Mogao Grottoes form a system of 492 temples 25 km (15.5 miles) southeast of the center of Dunhuang, an oasis strategically located at a religious and cultural crossroads on the Silk Road, in Gansu province, China. The caves contain some of the finest examples of Buddhist art spanning a period of 1,000 years. Construction of the Buddhist cave shrines began in 366 AD as places to store scriptures and art. The Mogao Caves are the best known of the Chinese Buddhist grottoes and, along with Longmen Grottoes and Yungang Grottoes, are one of the three famous ancient sculptural sites of China. Today, the site is the subject of an ongoing archaeological project. The Mogao Caves became one of the UNESCO World Heritage Sites in 1987. Silk Road and Dunhuang City The historic Silk Road starts in Chang'an and goes to Constantinople. On the way merchants would go to Dunhuang in Gansu. In Dunhuang they would get fresh camels, food and guards for the journey around the dangerous Taklamakan Desert. Before departing Dunhuang they would pray to the Mogao Grottoes for a safe journey, if they came back alive they would thank the gods at the grottoes. Across the desert they would form a train of camels to protect themselves from thieving bandits. Located about 5 km southwest of the city, the Crescent Lake or Yueyaquan is a oasis and popular spot for tourists seeking respite from the heat of the desert. Echoing-Sand Mountain (Mingsha Shan) Have you ever heard of a mountain that echoes to the sound of sand as you slide down its slopes? Can you image a perennially limpid lake in an area of desert sand? Here in Dunhuang, Gansu Province, you will have the chance to enjoy the wonderful spectacle of the Echoing-Sand Mountain. The mountain is five kilometers (about three miles) away from the city of Dunhuang. Seen from afar, the mountain is just like a golden dragon winding its way over the horizon. As you approach you become aware that the sand has many colors ranging from red to yellow, green, black and white. On days when a strong wind blows, the fast shifting sand roars; but when the wind is little more than a light breeze, the sand produces gentle, dulcet sounds akin to music. It is the same when you are sliding down the mountainside. At first, the sand under your feet just whispers; but the further you slide, the louder the sound until it reaches a crescendo like thunder or a drum beat. Some say that the sand is singing, while to others it is like an echo and this is how the mountain gets its name. Crescent Lake so called because of its shape. The water in the lake is so pure and sweet that it looks like an emerald set in the sand. Many of the visitors who have made their way down the mountain like to drink from the lake. According to historical record, the lake has been in existence for hundreds of years without ever being buried by the sand; it is really a geological wonder. Today, the mountain is listed as a key national scenic spot. It is possible to climb it on foot or, if you prefer, on the back of a camel. It is also possible to take a sand bath treatment. Your visit is complete as you appreciate the splendid environment consisting of golden sand, a wondrous mountain, a tranquil lake and a beautiful sunset.