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Iron Lock Pass

 Chongqing Attractions

Shanhaiguan Great Wall

Introduction to Iron Lock Pass (铁锁关)

Iron Lock Pass is one of the history that is rarely mentioned which actually show the importance of Yangtze river. According to the historical materials, Iron lock pass was not only used to prevent invasion in war times, but also used as toll-gate in peace times. 

Caotang river, a small branch of the Yangtze river, is located on the northern bank of Qutang Gorge, opposite the Mengliang stairway. There is a huge stone bearing two iron posts along the way where Caotang river flows into the Yangtze river. Also, there is a stone hole on the southern bank. In ancient times, in order to block the Yangtze river and prevent the intrusion of the enemy, people threaded iron chains between the hole and the posts, so it is called Iron Lock Pass. It was first built during Tang dynasty while in song dynasty, a general called Xu Zongwu deployed seven iron chains with a total length of 920 meters to prevent the invasion of the Mongolia Army in the year 1264.

The Iron Lock Pass was also used as a tax pass in ancient times, when commercial ships passing through the Yangtze river, officials collected tax from them. It became the biggest tax toll-gate of China since Tang and Song dynasty. It can be deduced that since Tang Dynasty, the economy and transportation started have been flourishing. 

As far as transportation concerned, tourists can visit Iron Lock Pass by car or by plane to Chongqing, Wuhan or Yichang first. While along the Yangtze River, there are plenty of cruises for people to choose. 

Shanhaiguan Great Wall


Yangtze River, Chongqing City, China

Shanhaiguan Great Wall

Main Sights

Iron Lock Pass, Yangtze River

Shanhaiguan Great Wall 

Travel Information

Admission for Iron Lock Pass: free

Opening Hours: whole day

Shanhaiguan Great Wall


1. Taking a Yangtze River Cruise, visitors will get chance to visit the Pass.

Shanhaiguan Great Wall

Travel Tips 

1. It is not recommended to visit there during “May 1st” and “October 1st” these two golden vacation weeks. Because at that time, the hotel reservation and transportation will be in its climax, the price will be much higher than ordinary times.

Shanhaiguan Great Wall

Tour including Visiting Iron Lock Pass

To be expected

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