A series of volcanic mountains is located within the vicinity of Lake Lanao forming a broad arc through the Lanao del Sur, Cotabato and Bukidnon provinces. At least six of the twenty odd peaks in this area are active and several stand in semi-isolation. The Butig Peaks, with their four crater lakes, are easily seen from Cotabato. Mount Ragang, an active volcano cone reaching , is the most isolated, while the greatest height is reached by Mount Kitanglad at .