Construction workers in tunnel

1920 × 1278

underground industrial facility

2095 × 1254

Concrete Tunnel Interior — Gray, Dull

1920 × 1080

Construction Workers Eating

1463 × 1129

Construction Workers on Beam — Black, Dramatic, Afternoon

1462 × 1127

Workers on Steel Beam — Black, Dramatic, Afternoon

3000 × 2400

Underground Tunnel with Tracks — Black, Industrial, Photograph, Railway Tracks

2560 × 1440

Underground tunnel construction site

1920 × 1278

Tunnel construction in progress

1920 × 1200

Tunnel construction site

1600 × 1200

Concrete Tunnel Interior — Gray, Industrial

2048 × 1280

Underground Utility Corridor — Green

8000 × 4190