History: [1280x960] Park Ranger demonstrating "torch throwing" at Mammoth Cave National Park in the 1960s. This was a technique used before electrical lights was abundant in the pitch black passages to highlight features to guest in a way that you would today with a flashlight.

https://i.imgur.com/3kbDnyv.jpg via /r/HistoryPorn https://www.reddit.com/r/HistoryPorn/comments/alecpt/1280x960_park_ranger_demonstrating_torch_throwing/?utm_source=ifttt