Iron gate gate, is one of the 26 ancient gates in China, the most important "throat" in the ancient Silk Road, is also the boundary point of the north and south Xinjiang, with the danger of "one husband when the customs, the whole family is not open", the narrowest part of the canyon is only 50 meters! Historically related to the iron gate gate: Zhang Shun sent to the West Region, opened the Silk Road; Tang Seng once went from here to the West Tianjing to get the scriptures; Ban Chaoping the West Region, drinking the Peacock River; Datang's famous border poet Yuan Gan wrote here "Tiemen Guanlou" "Tieguan Tianxiya, very few tourists. Close the door for a small, all day to the stone wall. The bridge spans thousands of dangerous, the road plate two cliffs narrow. Tried to the west building, looked at the head white. "and "Yinshan Yixi Hall" "Yinshan Yikou style like arrows, iron gate Guanxi moon like practice. Both tears stained horse hair, squatting Husha Yi people face. Husband 30 is not rich, An can keep pen all day long." verse!