Billowing ash clouds from the volcano in late spring disrupted air transportation across the Atlantic and parts of Europe, and caused local flooding around the glacier covering it.
The movement of magma beneath that part of Iceland appears to have almost halted.
"The major hazard now is mud flows," which can be carried onto nearby roads, said geophysicist Sigurlaug Hjaltadottir at Iceland's Meteorological Office.
Eyjafjallajokul (pronounced ay-yah-FYAH-lah-yer-kuhl) roared to life in April after more than two centuries of slumber. Only when activity has entirely ceased for three months will it be considered dormant.
Photo: Richard Wingo