popocatepetl volcano, mexico

4000 active approaching ascent aztec belt climb climbing eruption expedition from glacier guide guided high huatl ixta ixtaccihuatl ixtaccapound izta iztaccihuatl malinche meter mexican mexico mountain mountaineering mountains mythology nahuatl national neighboring orizaba park peak popo popocatepetl puebla snow still sulphur summit the tramping trans travel trekking view viewed volcanic volcano volcanoes