Campers in the Lake District were treated to a spectacular light show from a string of glowing orbs which flew in formation across the night sky.
It is the latest in a series of sightings which has baffled onlookers and excited UFO spotters across the UK.
The lights were seen above Ullswater on Saturday night over the Park Foot campsite.
People rushed out of their tents to stand and watch in awe as the lights darted back and forth.
They weaved in and out of one another and appeared to fade and then light up again as they soared through a clear sky.
Camper Paul Haigh, 28, of Darlington, said: "Most people had turned in for the night but we were woken by a commotion.
"Someone had spotted something and dashed out to get a better look.
"Soon everyone was outside their tents and looking up into the sky, it was like a scene from Close Encounters.
"The lights were amazing and seemed to fly in formation, they were darting around, fading an lighting up again.
"There was ever more than six in the sky at any one time, but as one faded another lit up, it was a really weird spectacle.
"There were various theories as to what they were, someone said Chinese lanterns, but they seemed much too big and moving too fast.
"They looked as though they were being propelled under their own power rather than being blown by the wind, it was a still night."
Lucy Gray, 26, of Leeds, said: "They seemed to be dancing around in the sky, not just racing straight across it like clouds.
"They were moving in formation, keeping a regular distance apart and they'd all shift around at the same time.
"It's the weirdest thing I've ever seen and I can't explain it, unless they were aircraft on a training exercise."
Similar lights in recent weeks have been found to be Chinese lanterns, often released during Summer weddings.