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The original was posted on /r/todayilearned by /u/OccludedFug on 2024-02-06 06:53:05.

Original Title: TIL the smallest island in Manhattan is the 100x200 foot artificial island “U Thant Island,” officially “Belmont Island,” created during the 1915 construction of the Steinway Tunnel directly underneath. It is home to a small colony of double-crested cormorants.