World's tallest power transmission tower - GIF

World's tallest power transmission tower.

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Previously:

Assembling an electrical transmission tower - GIF
Cutting down a transmission tower - GIF
Cutting down a transmission tower with a torch - GIF
Helicopter airlifting transmission tower - photo
Transmission tower collapses in on itself - GIF
Transmission tower designs and their capacities - GIF
Transmission tower workers taking breaks - GIF

I don't get the necessity of having a power transmission tower that tall, and why put three of them together? It looks more like some kind of radio tower some other Eiffel Towerish structure.

I have to go, now, to let the butterflies out of my stomach...

Why would that guy stick his hand in there!!?? (at :15)