On the evening of March 19th, an eruption began on the Reykjanes Peninsula. It was not a surprise as thousands of earthquakes had shaken that region for more than a year. An indication that an eruption could be expected. As is common in Iceland, an eruption begins with a fissure on the surface, and glowing magma begins to float around the region. The fissure can extend for many kilometers, as it extended up to 27 kilometers in Skaftáreldar in 1783.