appearance cable crane equipment gears greyscale heavy heavy-duty hook lifting machinery machines marshalling-yard mobility motion move moving power rails railway railway-yard repair repair-work repairs restoration restoration-yard steel-cable strength trains amusement amusement-ride around carnival carousel circular colorful colors colourful colours entertainment fair fun fun-rides height high lift lights music musical musical-ride noise ride rotating roundabout spinning turning up-and-down up-and-out angles building building-construction building-site building-work buildings construction construction-site construction-work danger external heights lifts metal-work pipes protected protection railing safety scaffolding security steel-scaffolding tall work work-safe workmen arm dangerous digger elevated elevation hydraulics perspectives post-hole-digger power-pole raised raising replacement replacing risks risky service spiraling spiralling trucks up-high vehicles