[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.

#vintage #[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. #history #HistoryPorn #Bot http://bit.ly/2Wvhmaz