The Orinoco - Secrets of the River rainforest exhibit represents the relatively unknown South American Orinoco River basin. Located entirely in Venezuela, the Orinoco River begins along the Venezuela-Brazil border in the Parima Mountain Range and continues approximately 1,600 miles (2,575 km) before it empties into the Atlantic Ocean. The tropical rainforest and savannas in this area are home to unparalleled concentrations of flora and fauna.