Supercoiling occurs when a structure such as these three elastic bands relieves the helical stress of overtwisting by twisting around itself.
Do you remember when,
Things were really hummin’,
Yeah, let’s twist again,
Twistin’ time is here!
Nikon D7200, EL Nikkor 50mm f2.8N (reversed), f5.6, 1/80 ISO 800, 12 image focus stack.