https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/328254Edit ImageSaveSaveEditCropCustom TextIllustration of underground tunneling-machine from Illustrated description of the Broadway underground railway (1872) by New York Parcel Dispatch Company.MorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGTIFFSmall JPEG 908 x 1200 px | 300 dpiLarge JPEG 1083 x 1432 px | 300 dpiTIFF 1083 x 1432 px | 300 dpi | 8.9 MBFree DownloadIllustration of underground tunneling-machine from Illustrated description of the Broadway underground railway (1872) by New York Parcel Dispatch Company.More