The Icelandic Road and Coastal Administration has closed roads and banned hiking in a large area north of the Bardarbunga volcano.
The black hatched area on the map below shows the region that is out of bounds:
The organisation warns of a "danger of flooding in connection with a possible volcano eruption".
More top news
A widow with no surviving relatives faced a 100th birthday alone until a Facebook appeal saw thousands of cards and presents flood in.
Prince William says he would love to take Prince George to football matches, but he will have to "pass that by the missus".
A lucky couple are counting their (one million and one) blessings after a thief broke into their car but left the winning lottery ticket.