The huge structure could potentially be the oldest Stone Age megastructure built by humans in Europe.
Archaeologists believe that the mysterious structure was built around 7,000 years ago.
Remarkable new footage shows a white-faced capuchin using a stone as a hammer to break open nuts to eat.
An 11,000-year-old pendant unearthed in Yorkshire has been inscribed with a series of lines and symbols.
Evidence of a 9,000-year-old Stone Age ritual site has been found on the Swedish island of Bla Jungfrun.
Two sets of human footprints dating back to the Stone Age have been found on the island of Lolland.
Stone Age artifacts left behind by Swedish nomads have been unearthed on the floor of the Baltic Sea.