This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
ALL UNDERGROUND STATIONS HAVE ESCALATORS. SOME ESCALATORS WORK ONLY WHEN ACTIVATED BY PRESSURE ON ELECTRONIC MATS... NARA .tif Scope and content General notes Local identifier DA Environmental Protection Agency NARAAuthor Okamoto Yoichi Yoichi Robert Photographer File ALLUNDERGROUNDSTATIONSHAVEESCALATORS SOMEESCALATORSWORKONLYWHENACTIVATEDBYPRESSUREONELECTRONICMATS