Global Volcanism Program | Image GVP-06039
The dark lava flows in the foreground were emplaced during a series of eruptions between 1724 and 1729 known as the "Myvatn Fires." A solely explosive eruption in 1724 was followed by effusive eruptions during 1727, 1728 (twice), and 1729. Lava flows covered much of the western floor of Krafla caldera and extended beyond the caldera to the north, and south into Myvatn lake. The 1727 eruption took place at the northern end of the fissure system, whereas the 1728 and 1729 eruptions occurred from the Leirhnjúkur area to the south.
Photo by Michael Ryan, 1984 (U.S. Geological Survey).