Santorini
From Tardis Wiki, the free Doctor Who reference
Santorini was a small island in the Agean Sea. (PROSE: Blood of Atlantis) It was once a volcano. (AUDIO: Herald of the Dawn)
Behind the scenes
The scientists whose minds were stolen in Shada are all named after features of the Greek island of Santorini. The island itself is also known as Santori or Thira. Caldera is the name of the inner sea the island surrounds, while Ia and Akrotiri are both cities on the island.