The mountain sits in the Cordillera Central, a range of mountains that runs right through the middle of the Dominican Republic. From the summit on a clear day, hikers can see across the whole island of Hispaniola.
Near the top the trees change from tropical forest to pine trees, almost like travelling to a different country as you climb. Hikers often spot wild orchids, colourful birds and tiny frogs on the lower slopes.
The journey to the top takes most groups two to three days of hiking along mountain trails. Mules carry heavy bags and camping gear, and guides lead the way through the forest.
Because Pico Duarte is so tall, it catches rain clouds from both the north and south coasts. That rain flows down into rivers that supply fresh water to towns and farms across the whole country.