This is the eerie moment CCTV caught a ' UFO' zigzagging in the skies over a supervolcano.
The grainy footage shows a bright object zipping across the sky over Yellowstone National Park in Wyoming.
The round object first emerged from behind a hill before getting bigger and brighter as it flew higher into the air.
Smoke from the volcanic hot spots can be seen billowing up as the spot passes over in the three minute clib.
The video was filmed on June 9 but was only recently uploaded to YouTube, according to Fox News .
Yellowstone is a nearly 3,500-square mile national park atop a volcanic wilderness and has become a hot spot for UFO sightings.
There have been hundreds of reported sightings in Wyoming going back to 1871, according to the National UFO Reporting Center .