Parque Nacional Grutas de Cacahuamilpa
Mexico's largest caverns are located within this 4,000-acre national park about 30 km (19 miles) northeast of Taxco. Guides (it's usually possible to arrange for one who speaks English) lead visitors along a 2 km (1 mile) illuminated walkway with fascinating limestone geological formations that ranks among the world's largest networks of caverns. A tour takes around two hours, after which you're free to spend more time on your own exploring. The road from Taxco is steep and winding but well-maintained and quite beautiful---it's also possible to visit the caverns as a side trip from Cuernavaca or Malinalco. If you don't have a car, it's easy to find taxis willing to make the trip here from any of these cities, and several tour operators also offer trips to Taxco that include an excursion to the caves.
