![The megalithic complex of Stonehenge began to be constructed around 5,000 years ago. The altar can be seen in the center, slightly to the left.](https://imagenes.elpais.com/resizer/v2/XYRI323RF5GIJJ3MENWKD7VCQQ.jpg?auth=87c3521aa99d9881f881b460a147e8fd5b9499fb2476e7c388d5d5de3b04db4e&width=414&height=233&focal=2793%2C1461)
New mystery at Stonehenge: The six-ton altar stone traveled over 435 miles from northern Scotland
Geologists and archaeologists have identified the origin of the enormous rock in the Orkney Basin and believe it was carried to the south of England along the coast