US-based MUFON is the world’s biggest organisation dedicated to UFO and alien research.
In a report to the organisation, the unnamed witness said: “I was monitoring the Winter Park ski resort town web camera – for my job we do operational cloud seeding for the resort to increase snow pack and use the cameras to monitor weather conditions.
“The frames update about every three minutes, to my knowledge.
A close up of the UFO
He claimed it was too close to the mountain to be a drone or plane, and that he confirmed with the resort that there were no helicopters present at the time.
He added: “Given the distance/size of the object, it is unlikely that it was a bird, bug, etc.
“My colleagues and I have been using this webcam for years and this has never occurred before.”
UFO blogger Scott C Waring said the area was a hotbed for aliens.