The Pandorica Opens
The Eleventh Doctor and Amy, following a message from River Song, arrive in Roman Britain in 102 AD. River shows the Doctor a Vincent van Gogh painting she recovered titled "The Pandorica Opens", which depicts the TARDIS exploding. The Doctor realises the Pandorica, a fabled prison for the universe's deadliest being, must be stored in a memorable location near the coordinates: Stonehenge.