background industrial metal springs Tension texture blue cable city future high industry lines pole post powerline tech technology transport transportation urban Utilities utility voltage wiring arachnid bugs hairy legs indent indentations long legs spider surface tension water anchor chain engineering iron links machine ship strength strong Taut wheel insects shadow shadows water strider danger electric power electricity electricity power lines insulators power power pole power pylon eletricidade elétrico ferro fiação fios futuro linhas tecnologia tensão urbanas angles clouded clouds dark electric-power electricity-power-lines energy height high-voltage large power-pole power-pylon powerful pylon silhouette sky steel stormy transference trees access accessibility boat bowring control dinghy direction fibre-glass glass-fibre reinforced plastic GRP help oarlocks oars outdoors painter recreation sailing secure security shore boat tender tow tow-rope towed towing wake waves yacht yacht tender yachting activities artificial artificial structure ascend ascending belayer belaying climb climber climbing climbing harness climbing rope climbing technique climbing wall descend descending equipment girl give outdoor sport portable wall safety safety harness shaped climbing holds sport structure surface take youth