Iceland's volcanoes have already demonstrated their power and unpredictability in recent times. Now, Katla, lying dormant under the Mýrdalsjökull glacier, has caught the attention of experts.

Laki, an even greater threat than Katla, lies along this line. Iceland's Laki volcano erupted in 1783, freeing gases that turned into smog. The smog floated across the Jet Stream, changing weather ...

Experts warn that the last three times Eyjafjallajökull has erupted, it triggered the eruption of Katla, an even more powerful volcano a few miles away. Such an eruption could be a global event ...

On December 21, after the sun rose around 11, Siggi, Guðrún, and I tried to press east to another volcano, Katla, whose jökulhlaup in 1918 had nearly carried off their grandfather while he was ...