Mainalo (, ; ) is the tallest mountain in the Menalon highlands of the Peloponnese, and is located in Arcadia, Greece. In antiquity, the mountain was especially sacred to Pan. The mountain's highest point, known as both Profitis Ilias and Ostrakina, at a height of , is the highest point in Arcadia. The mountain has a length of from southwest of Tripoli to northeast of Vytina, and a width of from Zygovisti to Kapsas. The mountain is part of a Natura 2000 site, designated in March 2011, covering an area of . In the 19th and early 20th century, the mountain was known as Apano Chrepa. Mainalo is home to a ski resort, which is found at an elevation of , with 7 ski slopes and 4 lifts, which are at an altitude between . Geography Mainalo's ground is primarily made of lime, among various calcareous substrates. Mainalo has various named peaks. Listed by height, they are, among others; Ostrakina () or Profitis Ilias () at Pateritsa () at Aidini () at Mavri Koryfi () at Mourtzia () at Mesovouni () at Krevatia () at Epano Chrepa () at Lioritsi () at Sterna () at Ecology The mountain houses many forests of Greek fir and Crimean pine. Natura 2000 cites these forests as the "[Greek fir and Crimean pine's] best representation in Peloponnisos." Mainalo has several ecological environments, comprising: Mediterranean arborescent matorrals, covering of the mountain, this environment consists of Mediterranean and sub-Mediterranean sclerophyllous evergreen shrublands grouped under arborescent junipers.:59 Endemic oro-Mediterranean heaths with gorse, covering of the mountain, this environment consists of a dry mountainous environment. Mediterranean heaths are usually dominated by Genista, while containing various other, often spined, shrubs like Acantholimon, Astragalus, Erinacea, Bupleurum, Ptilotrichum, Echinospartum, and Anthyllis. This environment also includes a variety of Asteraceae and Lamiaceae.:53 Calcareous rocky slopes with chasmophytic vegetation, covering of the mountain, this environment consists of limestone cliffs and screes, featuring great ecological diversity, with many endemic plants growing in fissures within rock.:96 Many amphibians, reptiles, mammals, insects, and diurnal predatory birds inhabit Mainalo. These include, among others; Reptiles such as the Balkan whip snake, marginated tortoise, Kotschy's gecko, Greek rock lizard, Peloponnese wall lizard, European copper skink, and the horned viper. Mammals such as the European hare, beech marten, European badger, lesser noctule bat, edible dormouse, Thomas's pine vole, and the western broad-toothed field mice. Amphibians such as the European green