Smithsonian magazine's 22nd Annual Photo Contest | Made possible through the support of MPB.com

21st Annual Smithsonian Magazine Photo Contest Travel
Subway tunnel

A walkway tunnel to a subway station.

Photo Detail
Date Taken: 07.2022
Date Uploaded: 11.2023
Photo Location: St. Louis, Missouri, United States of America
Camera: SM-A125U
Copyright: © Li Huang