Indian Railways. (2025). *Kannada Tullu Tunnel – Images PDF* [PDF]. South Western Railway. https://indianrailways.gov.in/railwayboard/uploads/archives/kannada_tullu_tunnel_images.pdf
When you locate a PDF, scroll to the “Permissions” or “License” page (often the first or last few pages). If it states “Public Domain” or “Creative Commons Attribution (CC‑BY)”, you can freely share it, embed the images in presentations, or even print hard copies. kannada tullu tunne images pdfl link