Hike up iztaccihuatl volcano mexicos third highest mountain for a nature filled day full of adventure heading two hours east from mexico city with an expert guide begin your tour with a hearty breakfast own expense in tlalmanalco to fortify your climb youll get just a couple thousand feet shy of the snow capped summit on the 17 000 foot dormant volcano with outstanding views of neighboring popocatepetl and the valley of mexico below