Archaeologists have announced the discovery of more than 500 standing stones in Huelva, Spain.
Archaeologists have unearthed an additional 137 large stone jars at megalithic sites in Southeast Asia.
A megalithic tomb unearthed in County Meath has been described by archaeologists as the 'find of a lifetime'.
A megalithic site featuring ancient tombs even older than Egypt's pyramids has been found in Poland.