Altar Stone, Megalith in the United Kingdom
The Altar Stone is a significant megalith within the Stonehenge monument.
Archaeologists believe that the Altar Stone was erected at Stonehenge during the third millennium BC.
Some theories suggest that the Altar Stone may have had a ceremonial or religious function.
Visitors to Stonehenge can view the Altar Stone, although direct access may be restricted.
Unlike other bluestones at Stonehenge, the origins of the Altar Stone are traceable to Wales.
Source: Wikimedia