 Despite the name mountains, the area is an uplifted plateau, dissected by a number of larger rivers.The highest point in the park is Mount Werong at above sea level; while the low point is on the Nepean River at above sea level as it leaves the park.The national park is one of the eight protected areas that, in 2000, was inscribed to form part of the UNESCO World Heritagelisted Greater Blue Mountains Area.