Viking-Age Ring Fortresses unesco.org - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from unesco.org Daily Mail and Mail on Sunday newspapers.
The gold ring is said to have been made during the Late Iron Age, which was a period between 400AD and 800AD, and worn by a man based on the band size.
The burial mound was discovered using sensing tools on satellites. The tools are able to see beneath layers of earth to look for disturbances. The mound is believed to be in Wiejkowo, Poland.
A graphic shared over 2,000 times in just 24 hours on Facebook makes surprising claims about the origin of the name of the wireless technology Bluetooth.