UFO investigator Brenda Butler says we will never know the full details of what happened in Rendlesham Forest 30 years ago.
In December 1980 there were reports of unidentified flying objects over the forest near Woodbridge, Suffolk.
Orford Ness Lighthouse, a crashed satellite and a hoax are amongst the explanations still being debated.
"There was something in the forest," said Ms Butler. "I think it came from another dimension."
BBC Suffolk is marking the 30th anniversary of the sightings, culminating in a special two-hour broadcast live from Bentwaters Cold War Museum on Friday, 17 December, 7-9pm. Mark Murphy is presenting the show.To read the rest of the article, click here.