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
Jamie Oliver turned down the offer of playing a hobbit in the movie adaptation of the book by JRR Tolkien, the TV chef has revealed.
Children are being put at risk as 11% of posts for permanent children's social workers remain unfilled, experts have warned.
A Network Rail boss who presided over the Christmas trains chaos will not receive a bonus of more than £300,000 when he leaves in February