Giant Spool

I really want to turn those wheels.
Throw some switches and levers.

This spool makes me think of the tires on the old terex earth mover machines we saw all the time when I was a kid. We had a smaller one (only like 3 ft in diameter as opposed to some of the biggest that were closer to double that or more) in the yard we had filled with sand for a sand box, It's hard to image the sheer size of that spool when you look at it. That cable looks like it has to be a good 5-6 inches in diameter just based on the size of the spool. This seems much larger than your normal transmission line in diameter so these probably ran from the turbine to transmission lines or to a stepup transformer before it's sent out on the line to be transmitted.

Not fun to bend around corners from experience

Copper thieves are drooling at this photo.

I could pay my electric bill for a long time with that! That's bait for the scrappers, then they fall 150' down through that grate on the floor.