Global Volcanism Program | Image GVP-05770
The elongated summit ridge of Hekla volcano is seen here from the west with a recent lava flow in the foreground. The 5.5-km-long Heklugja fissure cuts across the volcano and is often active along its full length during major eruptions. Repeated eruptions along this rift are responsible for Hekla's elongated ENE-WSW profile.
Photo courtesy of Jules Friedman (U.S. Geological Survey).
Keywords: lava flow