Image: Summit Tunnel (Tunnel 2) being repaired and widened by workers
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Original image (944 × 732 pixels, file size: 220 KB, MIME type: image/jpeg)
Description: Summit tunnel being repaired and rebored after the 1906 San Francisco Earthquake
Title: Summit Tunnel (Tunnel 2) being repaired and widened by workers
Credit: https://www.santacruztrains.com/2017/12/tunnels-summit-tunnel-2.html
Author: Unknown
Usage Terms: Public domain
License: Public domain
Attribution Required?: No
Image usage
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