Global Volcanism Program | Image GVP-05991
An explosive eruption in 1724 during which the 350-m-diameter Viti Crater and 14 other smaller craters were created marked the start of a five-year-long period of rifting and eruptions known as the "Myvatn Fires." Viti and neighboring smaller craters, seen here from the east, were formed during a brief eruption on May 17-18. The eruption and accompanying earthquakes caused people living on farms east of Myvatn lake to flee.
Photo by Michael Ryan, 1984 (U.S. Geological Survey).