You searched for: Place Mexico Remove constraint Place: Mexico Place Vicinity of Cerro Zempoaltepetl. Near Piksa'ah (Piedra Redonda) about eight kilometers east of summit, on trail to Zacatepec Mixes Remove constraint Place: Vicinity of Cerro Zempoaltepetl. Near Piksa'ah (Piedra Redonda) about eight kilometers east of summit, on trail to Zacatepec Mixes Topic Cladonia Remove constraint Topic: Cladonia Topic Lichens Remove constraint Topic: Lichens