Fig. 3
From: Ceboruco hazard map: part I - definition of hazard scenarios based on the eruptive history
a Sketch illustrating the two main evolutionary stages of Ceboruco: I) First stage: Construction of the ancient volcano with a height of ~ 2700 m a.s.l. (after Nelson 1986); II) Second stage: Formation of the outer caldera crater during the Jala Plinian eruption, and III) Second stage: explosive activity and formation of the inner crater followed by effusive activity on the flanks leading to the present morphology of the volcano; b Photo showing the interior walls of the outer crater where dykes dated at 45 ± 8 ka (Frey et al. 2004) are exposed, and c Aerial photo taken from the NE showing the summit area, including the outer and interior crater rims