English: This is how the cable is attached, fed out and in when going up or down.
Berlin’s Hi-Flyer is the biggest captive helium balloon in the world. The “Welt-Balloon” has a gondola for visitors to ascend silently above Berlin. It ascends to a 150 meters (450ft) but it is attached by a cable to the ground. The trip lasts for about 15 minutes, including ascending and descending.
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