- 2268 480x800 pipe, smoke, building
- 1734 480x800 pipe, curve, metal
- 3485 480x800 pipe, bottom view, starry sky
- 3435 480x800 pipe, structure, sky
- 4656 480x800 pipe, twisting, bottom view
- 10847 480x800 pipe, cloud, ribbed
- 13376 480x800 pipe, poppies, field
- 19875 480x800 pipe, metal, wheels
- 13658 480x800 pipe, device, forms
- 16870 480x800 pipe, light, form
- 1476 480x800 tower, pipe, buildings
- 1522 480x800 building, pipe, windows
- 11055 480x800 building, pipe, yellow
- 3700 480x800 tunnel, pipe, water
- 5975 480x800 tunnel, pipe, water