You searched for: Institution University of Michigan. Libraries Remove constraint Institution: University of Michigan. Libraries Place El Zapote; El Sumidero; 22 km north of Tuxtla Gutiérrez. Municipio de Tuxtla Gutiérrez Remove constraint Place: El Zapote; El Sumidero; 22 km north of Tuxtla Gutiérrez. Municipio de Tuxtla Gutiérrez