- 3826 1600x1200 pipe, smoke, building
- 2502 1600x1200 pipe, curve, metal
- 4435 1600x1200 pipe, bottom view, starry sky
- 4244 1600x1200 pipe, structure, sky
- 5443 1600x1200 pipe, twisting, bottom view
- 12456 1600x1200 pipe, cloud, ribbed
- 14178 1600x1200 pipe, poppies, field
- 20871 1600x1200 pipe, metal, wheels
- 14212 1600x1200 pipe, device, forms
- 17282 1600x1200 pipe, light, form
- 2048 1600x1200 tower, pipe, buildings
- 2088 1600x1200 tower, pipe, buildings
- 2194 1600x1200 building, pipe, windows
- 13192 1600x1200 building, pipe, yellow
- 4153 1600x1200 tunnel, pipe, water