IS it a bird? Is it a plane? Is it a bit of muck on the camera lens?
Stroud Life reader Pete Llewellyn reckons not, and can't explain the shape in the sky that his camera picked up.
He only noticed the UFO when he took a second look at the photograph he had taken earlier.
"I did not see it at the time and have only just noticed it," said Pete, who sent the photograph to Stroud Life in the hope that other readers might have seen the same object in the skies above the five valleys.
"It was taken on March 13 looking towards Sheepscombe, just below Painswick Golf club."
Reports of UFOs in the Stroud area are nothing new – on May 22, 2010, a resident called police to say an alien's car parked on his driveway.
In 2008, a Stroud resident told police he had seen 10 UFOs.
The officer reported in May of that year: "Caller states that his wife and son saw them too. They made no sound. Seemed to be below cloud level."
And in 2006, a strange bright disc hovering above Cainscross baffled residents.
One who alerted the UFO group Contact International UK reckoned it was travelling at about 40mph.
However, police later said they had been told three flares were let off on nearby Selsley Common.
Stroud Life readers who think they know what the shape in the sky might be are welcome to email email@example.com or to contact 01453 763 661.