Mountain canyon.
The bridge across the gorge.
The Colorado River.
Servicemen of the bridge across the river.
Every day they overcome a huge mountain route to get to the top of the bridge.
Workers on the bridge connecting the belay ropes paint the bridge ropes.
New York.
Skyscraper.
Window cleaners wash the windows at high altitude.
New York view from above (dominant).
Ferryman trafficked log rafts down the river to the sawmill processing.
The strong current of the river. 4 Ferryman's made a lot of physical effort to keep a log on the ferry.
Logs, rolling on the river.
lion tamer.
Lions in the cage.
Tamer in a cage with a lion.
The process of training.
The man on the belay ropes climbs on top of the pine to cut down all the branches, and cut down the tip.
Testing vehicles.
A car passes an obstacle and flipped.
The car crashes and flying through the obstacle.
Cars collide with each other.
Helicopter.
The operator with the camera on a tripod standing on the helicopter body.
Dispatched for frames for reporting.
The helicopter flies over the city.
The helicopter with the operator makes a dead loop.
Large car racing.
The track, fans crowd.
One car flips and flies off the track.
The riders crash into each other.
The pilots of the Naval Academy.
Men with helicopter jump with parachutes.
It is their graduation test.
If the landing is soft, they receive a diploma.
Jockeys riding overcome obstacles.
Some fail (roll over).
Firefighters in cars rush through dense vehicular traffic at the scene.
River.
Clouds of smoke.
extinguish the fire
Key words
1930, USA, Mountain, canyon, bridge, river, pilots, aviation, air force, animals, animal trainer, fire, street, steam cars, testing, skyscraper, cinema