Cajon del Maipo

in the basement of Metro stop Bellavista de la Florida, there is the Intermodal Station of buses, the bus M72 departs every 30 minutes to Cajon del Maipo, unfortunately the buses going Baños Morales, where is El Morado National Park only departs at week ends, tomorrow you can catch a bus going to El Volcan, may be at 8.00. El Volcan is 11 km before of Baños Morales, the hitchhike is easy , but beware of the return, usually this bus departs from El Volcan at 17.00
Also every hour there is a M72 bus going to San Gabriel. all days, from where you can trek along El Yeso Valley, with some hitchhike you can reach Embalse (Dam) El Yeso with a superb scenery