Reserva Antropológica El Pomier [1]: This anthropological reserve holds one of the most significant collections of rupestrian art found in the Caribbean. A series of caves features about 4,000 paintings and 5,000 rock drawings by the Taíno, Ingeri, and Carib people.
San Rafael [2]: Take a dip in the cold and refreshing waters of the balnearios San Rafael, then enjoy the breathtaking and photo-perfect views along this highway stretch of the Península de Pedernales, where cliff-top vistas with flowers bloom against the backdrop of white-stone beaches and the azure Caribbean Sea.
Parque Nacional Jaragua [3]: Take a boat trip to watch the flamingos and 130 other species of birds in their natural habitat of this protected lagoon.
Bahía de las Águilas [4]: Charter a boat from the fishers at the Las Cuevas village to one of the most pristine and definitely the most remote beach in the Dominican Republic.
Parque Nacional Isla Cabritos and Lago Enriquillo [5]: Visit the crocodiles and endangered iguanas at Lago Enriquillo, four times saltier than the sea and the lowest point in the Caribbean.
Links:
[1] http://www.moon.com/destinations/dominican-republic/the-southwest/west-santo-domingo-and-the-interior/san-cristobal/sights/reserva-antropologica-el-
[2] http://www.moon.com/destinations/dominican-republic/the-southwest/peninsula-de-pedernales/barahona/sights/san-rafael
[3] http://www.moon.com/destinations/dominican-republic/the-southwest/peninsula-de-pedernales/parque-nacional-jaragua
[4] http://www.moon.com/destinations/dominican-republic/the-southwest/peninsula-de-pedernales/bahia-de-las-aguilas
[5] http://www.moon.com/destinations/dominican-republic/the-southwest/peninsula-de-pedernales/lago-enriquillo-loop-road/parque-nacional-isla-cabritos