You searched for: Institution University of Michigan. Libraries Remove constraint Institution: University of Michigan. Libraries Place El Ocotillo; 3-4 km SW of Zenzontla, NE río Ayuquila, 13-14 km SE of El Chante Remove constraint Place: El Ocotillo; 3-4 km SW of Zenzontla, NE río Ayuquila, 13-14 km SE of El Chante