Global Volcanism Program | Image GVP-08221
The post-caldera lava domes Cerro Pajita, Cerro Gaital, and Cerro Caracoral (seen left to right from La India Dormida on the west caldera rim) were formed along an E-W-trending lineament about 900,000 years ago. The easternmost dacitic dome (Cerro Caracoral) also contains andesitic rocks. Gabbroic xenoliths are common in the central dome, Cerro Gaital. The Río Mar pyroclastic flows were produced about 40,000-50,000 years ago from a vent on the caldera floor between the Gaital and Pajita domes.
Photo by Paul Kimberly, 1998 (Smithsonian Institution).