arête and pinnacle karst

   A landscape of naked reticulated raw-topped ridges having almost vertical slopes and a relief of as much as 120 meters. The ridges rise above forest- covered corridors and depressions. Found in New Guinea at elevations of 2,000 meters and more [10].

   Both pinnacle karst and arête karst are varieties of limestone landscape formed under equatorial rain forest cover. They are characterized by vertical sided blades of bare rock fretted by dissolution [9].