In the video, a bright metallic object appears to dart across the side of the screen as smoke rises from the volcano’s springs.
The footage was recorded on June 9 but only recently uploaded to YouTube with the title: “Impressive UFO near the Yellowstone Volcano”, the Express.co.uk reports.
Alien hunters have long been obsessed with the supervolcano, believed to be a UFO hotspot.
Shocking footage emerged in August of several objects flying through Yellowstone’s clouds.