Mystery eruption tracked to Indonesia
Scientists think they have found the volcano responsible for a huge eruption that occurred in the 13th Century.
The mystery event in 1257 was so large its chemical signature is recorded in the ice of both the Arctic and the Antarctic.
European medieval texts talk of a sudden cooling of the climate, and of failed harvests.
In the PNAS journal, an international team points the finger at the Samalas Volcano on Lombok Island, Indonesia.
Prof Clive Oppenheimer told Roland Pease on the BBC's Science In Action programme how the culprit volcano was tracked down.
Image: Petter Lindgren
03 Oct 2013