Global Volcanism Program | Image GVP-08282
The Aguas Zarcas group of nine basaltic cinder cones, located on the far northern flank of the Platanar-Porvenir complex to as low as 160 m altitude, is in part Holocene in age. These cones lie 10-17 km behind the volcanic front of Costa Rica at a point 125 km above the Wadati-Benioff zone. The pyroclastic cones were constructed along two parallel fractures striking NNW.
Photo by Paul Kimberly, 1998 (Smithsonian Institution).