Global Volcanism Program | Image GVP-04020
MacKenney crater (right center), constructed NW of an older cone at the left, has been the source of most of Pacaya's historical eruptions. Frequent strombolian eruptions repeatedly build up the cone after it is partially destroyed by intermittent larger explosions. An extensive field of black lava flows produced from MacKenney cone since 1965 appears in the background of this January 25, 1987 view from the NE.
Photo by Norm Banks, 1987 (U.S. Geological Survey).