1000x1607 Tunnel Picture"> (Top 20 HOT)

[e.g., Concrete lining, drainage channels, lighting fixtures, or tracks]

If the image is part of a larger survey, mention how it was processed. For instance, point cloud registration or seam carving methods can be used to enhance visual quality for better defect identification. 5. Conclusion & Recommendations 1000x1607 Tunnel Picture">

Provide a brief description of what the 1000x1607 image captures. Since the aspect ratio is vertical, it likely focuses on a specific section of the tunnel wall, a tunnel cross-section , or the portal entrance. Viewpoint: [e.g., Facing North at Chainage 1+250] a tunnel cross-section

[e.g., Schedule a manual tap test for suspected hollow areas identified in the photo.] or the portal entrance. Viewpoint: [e.g.

Note any visible cracks, spalling, or exposed reinforcement.