Tahual

Deeply dissected Volcán Tahual rises ~700 m above plains S of the town of Monjas. The summit of the forested stratovolcano is cut by a broad erosional crater that extends to the base of the volcano and is narrowly breached to the NE. A Holocene pyroclastic cone near the NE base fed a short basaltic lava flow (Williams et al., 1964). The scenic lake-filled Laguna de Hoyo lies to the N. This steep-walled crater and the NE-flank cinder cone lie along faults bordering a graben that extends across the eastern base of the volcano to neighboring Retana caldera on the SE.