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).

This image is made available under the Public Domain Dedication CC0 license, but proper attribution is appreciated.

Arenal