Global Volcanism Program | Image GVP-04280
An aerial view overlooks the impact crater field of the 29 July 1968 eruption on the W flank near Pueblo Nuevo. Most of the craters are partially filled by rainfall. These secondary craters, produced by the high-velocity impact of blocks ejected from a new crater that opened on the W flank of Arenal, ranged in size from a few m to 30 m in diameter. The crater field extended as far as about 5 km from the vent. The devastating eruption of 29 July killed about 80 people.
Photo courtesy of Tom Simkin, 1968 (Smithsonian Institution).