Figure 1
El Chichόn volcano in NW Chiapas, Mexico. a Location map. Vi = Villahermosa, TG = Tuxtla Gutiérrez, SC = San Cristóbal de Las Casas, CVA = Chiapas Volcanic Arc. b The El Chichόn crater and its lake (November 2006) formed during the 1982 Plinian eruptions.