It's long seemed like Stonehenge harbors many secrets, and it's not keen on giving them up. But a rare lunar event might finally give us some answers.

Stonehenge's altar stone was quarried over 4,600 years ago, far from the Salisbury Plain in Wiltshire. But experts now know where it originated.

The curator of Stonehenge, Heather Sebire, told BBC Radio Wiltshire: "The whole monument is orientated to the midwinter sunset and the midsummer sunrise. Today is marking the turning of the year.

Stonehenge poses more questions than answers, making it one of the most mysterious prehistoric monuments in the world. And because of its proximity to London, the famous landmark makes for a ...