In the northern zone are two projecting cliffs difficult to reach; the northernmost is Bird Cliff, with a height of 2.334 kilometers. Close by and to the south is the Cliff of Carnations, which being 2.388 kilometers above sea level is the second-highest peak in the Sierra de Guadarrama. No other elevations are so prominent. To the south is Peñalara peak, distinguished by a geodesic vertex of the first order that indicates its height of 2.285 kilometers. The 2.271 km Two Sisters Mountain marks the southeastern limit of the park. Besides these peaks, other highlights include Cheese Boulder, a 2.032 km peak to the southeast of the Younger Sister, midway between Puerto de Cotos and the cirque of Peñalara.