Global Volcanism Program | Image GVP-06067
The Torfajökull central volcano is cut by a 12-km-wide caldera that formed during the Pleistocene. Torfajökull is of one of the largest areas of silicic and intermediate volcanism in Iceland. The Laugahraun (lower left) and Domadalshraun (right center) lava flows, seen here from the SE, are located just within and north of, respectively, the northern caldera rim. During postglacial times only a narrow fissure zone at the western end of Torfajökull has been active, producing mostly silicic lava flows, lava domes, and tephras.
Photo by Oddur Sigurdsson, 1977 (Icelandic National Energy Authority).