One 'alien' spaceship was not visible to the naked eye, but was captured on camera. It was probably a flying saucer taking off from an underground alien base, deep under a mountain called Glacier Peak in Washington State.

The object was caught on September 9, 2016, at about 3:30 p.m. An unnamed witness submitted the report on October 5, 2016, and filed it in the reporting database of the Mutual UFO Network (MUFON),

Having gone to the area with his uncle to check out an old coal mining road in the remote Glacier Peak Wilderness, Washington, he had been clicking images of the scenery with his cell phone.

Later, while looking over his photographs, he spotted a mysterious UFO craft flying over the mountain.

"I was with my uncle in Glacier, Washington exploring up on an old coal mining road. Having never been up there before, I took my cell phone with me and was snapping photos of the scenery around me," he said. "I was taking pictures of what I believe is Skyline Ridge, and I took several photos in a row. Only one contained what I believe to be a spaceship of some sort over the mountain to the right."

UFO blogger Scott C. Waring said that seeing a UFO in a photograph seemed to indicate that the UFO just materialised suddenly over the mountain. However, it is also possible that it showed up in just one photo because it was probably moving too fast to be able to show up in many.

Moreover, the UFO seemed to have split into two sections or modules when it was filmed. Waring assumed the modules reunited mid-flight, just when they got photographed.

"A UFO was seen over Glacier last week that appeared out of thin air over one of the mountain tops," Waring commented on his UFO Sightings Daily blog. "The UFO does appear to be in two separate sections that probably unite when moving."

As the UFO had emerged from an underground base, whose entrance was on the mountain top, the fourth tallest peak in Washingtone state, Waring reflected that it would be less accessible to humans.

But from where exactly do the UFOs emerge? It is presumed that the underground bases have huge hangars, from which alien spaceships launch off for long, deep space voyages. They take off silently and stealthily, as the eyewitness did not spot the huge take-off.

"This UFO probably came from an underground base, which has its entrance at the top of this mountain," Waring stated. "The location would be almost inaccessible to most humans, making it the perfect location to come and go unseen by human eyes."

The comments by readers on Waring's blog seem to be excited and vocal.

"There is so much evidence and so many images that are clearly of real craft that anybody who follows the subject knows the global population is being lied to and has been lied to for a very long time," a UFO believer said.

"We're at a kind of standoff now where the authorities know the public knows it's real yet they continue to refuse to acknowledge it," the UFO fan added. "How long can it continue?"

However, one enthusiast was more cautious about the viewpoint that the UFO had split into two. "I think it is not in two parts," the enthusiast argued. "Looks like a reflection from the outer disc. If you inspect the picture closely you will see the Sun is behind the camera or to the right."

Are underground bases common launchpads for alien hunters? It would seem so, going by the secret underground UFO base earlier reported by an eyewitness in the Kangtega peak of the Nepal Himalaya.

YouTube/Finding UFO