The Iron Fort (traditional Chinese: 鐵堡; simplified Chinese: 铁堡; pinyin: Tiě Bǎo) is a former fort in Ren'ai Village, Nangan Township, Lienchiang County, Taiwan.

The fort was originally constructed as the training base for the amphibious forces.

[1] The fort was constructed at the southern coast of Nangan Island on an offshore rock.

The middle of the rock was excavated to form a tunnel which houses various military equipment and accommodation facilities.

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