aerial cable car gondola lift mountain roof ski station tramway transportation wheels base chairlift climb elevator hill line mechanism motor wheel Asia china chinese ferry fun leisure ride river sky transport travel wire Yangtze aerial-lift aerial-tramway cabin cable-cars cablecars cables cableway cars danger height high movement not in use personal-transport perspectives risk risky scenery scenic seats suspended suspension tourist-transport tourists views aerial-work-platform articulating-boom-lift basket-crane boom-lift cage cherry-picker cherrypicker compact dangerous elevated elevated-work-platform extension hydraladder hydraulic-arm hydraulic-lifting-system hydraulic-platform hydraulics looking-up maintenance man-lift manoeuvrable mobile-hydraulic-platform nifty-lifter platform railing rails raised raised-platform safety tall trees up-high work workplatform Harness men men-at-work roof-work roofing safety-harness self-propelled workmen