On Sunday evening, the Yarnell Hill Wildfire killed 19 firefighters in Yarnell, Ariz. This time-lapse video, recorded by photographer Matt Oss, offers a glimpse into the scale and the speed of the fire, which was the deadliest in decades, as reported by the National Fire Protection Association.
The 20-minute video was shot at 4 p.m. MST on Sunday. Near the end, flames rise above the mountain peak.