When did the Iceland volcano erupt for the first time?

Answer 1

The Guðnasteinn Volcano from underneath the Eyjafjallajökull glacier in Iceland erupted first in 1821 and some damage was done (glacier runs). The second account of Volcanic activity was recorded on 19th and 20th December 1821 with a series of explosive eruptions which continued for a few days with a heavy ash fall.

From June to August 1822 Guðnasteinn erupted again with giant plumes of ash that could be seen from the countries capital. From August to December 1822 Farmers reported fluoride poisoning in cattle and sheep from the high density ash.

Ash from the volcano can be found all over Iceland it is dark grey in colour and contains up to 40% Silicon Dioxide.

Seismic activity on the volcano was noted in December 2009 with thousands of small earthquakes (1-2 Richter), On March 20th Guðnasteinn erupted and was released through a fissure vent and not from underneath the glacier.

On April 14th Guðnasteinn continued its eruption through a crater underneath the glacier causing meltwater floods.

Answer 2

Officially, Iceland was discovered by the Vikings in c. 860-874 AD. But it is likely that Irish monks had been coming to the island for some time to seek isolation.

Answer 3

The Iceland volcano Fagradalsfjall erupted for the first time in over 6,000 years on March 19, 2021. This eruption marked the first volcanic activity in the area in centuries.