Wow!! How did you get that image. Amazing
I stuffed an old whisk with steel wool, lit it on fire, and flung it in circles for a 10 second exposure. It is important to note that this was done on train tracks surrounded in rocks (no grass or trees) on a day that it rained before and after this picture. we searched the area in the dark afterward for any embers and put anything glowing out. https://improvephotography.com/47120/ultimate-guide-to-steel-wool-photog....
this website details safety as well as supplies, editing, camera settings, various other things.
"Make it work" - Tim Gunn