Yuannao Ancient Trail, which is located in Jianmen Shudao Tourist Area of Sichuan Province, began trial operation after restoration on December 17, according to the local tourism bureau in Jiange County.

The over-500-meter-high, 440-meter-long steepy, imposing trail, known as the second of its kind in the attraction, lies along the cliff next to the glass-bottomed suspension bridge, providing breathtaking views of the spectacular Jianmen Pass.

The trail is only 15 to 30 centimeters in width, making the trekking quite an experience.

Jianmen Pass, a mountain pass located southwest of Guangyuan City, is the most strategically important pass on the ancient Shudao (Shu Path) in ancient times. It is also famous for the beauty of its bold slopes.

Shu Path, a 2,000-year-old rugged and dangerous road system, including paths from the two provinces of Sha'anxi and Gansu, links Sichuan, a highly inaccessible mountainous province named Shu in ancient China, with the outside. It has been inscribed onto the UNESCO's World Heritage Tentative List and nominated for the World Natural and Cultural Heritage status.