Sumatra
From Tardis Wiki, the free Doctor Who reference
Sumatra was a island in the south Pacific Ocean.
On the same day as the volcanic eruption of Krakatoa in 1883, a sketch of the Ninth Doctor, in his ninth incarnation, washed up on a beach on Sumatra. It eventually found its way into Clive Finch's collection of artifacts related to the Doctor. (DW: Rose)
The Second Doctor, Jamie McCrimmon and Victoria Waterfield visited a post-21st century Sumatra. (CC: The Great Space Elevator)
