Come hike inside the Barra Honda National Park.  The main attraction here is an intricately large system of limestone caverns which house a multitude of intriguing forms and figures. Reef rocks constitute Barra Honda hill, 300mts tall which is a perfect example of old reefs that moved due to disturbances provoked by tectonics faults 60 millions of years ago.  You can enjoy these caves and admire the flora and fauna of this place, you can might see gentle deers, interesting coatis, curious agutis, lazy anteaters and playful monkeys.  If you stay sharp you can also spot numerous tree species and medical plants.  This hike lasts for approximately one hour and can be a difficult trek, depending on your physical fitness.