A mystery ring which appeared in the Norfolk sky
on Monday 1 March has been explained by air traffic control at Norwich
Airport.
A US military pilot carrying out an air test at
35,000 feet - about six and a half miles high - flew a perfect circle
above Dereham.
The weather conditions meant he left a vapour trail
which could be seen from as far away as Norwich.
People from across the county have sent in their
photos of loop in one of our most popular photo galleries ever.
Thanks to everyone who sent in their snaps.
This photo
was sent in by the Norwich Operations Unit for Bristow Helicopters.
The team joked it was a smoke ring from a woodbine.
John
Rumball sent this photo of the vapour ring over some rooftops.
Who would believe the loop was six and a half miles up!
This
was the view of the circle above Brooke, near Bungay, which
was snapped by Barrie Russell.
Benjo
Giller took this picture through some trees at Maypole Green,
Toft Monks.