During the summer of 1783, the greatest lava eruption of historic times poured forth at accompanied by the release of an enormous volume of gases that enshrouded much of northern europe in a "dry fog" or blue haze rich in so2 (one of the visible components of today's urban smog).

During the summer of 1783, the greatest lava eruption of historic times poured forth at Iceland

Explanation:

Situated in Southern Iceland, the Laki area is made up of active Volcano fissure.

They last erupted in 1783, which is considered by many to be the biggest in recorded history.

The lava was able to destroy up to 20 villages and the poisonous smoke in the atmosphere completely destroyed wildlife and crops.

Up to 1/4th of Ireland's population died from famine and the weather changes were felt as far away as North America.

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