The town of Gríndavík, Iceland, has been evacuated and a state of emergency declared following a series of earthquakes caused by magma bubbling beneath the surface.
Residents are now waiting for a likely eruption, which experts say could occur anywhere along a fifteen-kilometre fissure - or narrow crack - in the ground.
Darren Adam is a correspondent in Reykjavík.
Adam spoke to Ingrid Hipkiss.
