Soğuksu National Park (), established on February 19, 1959, is a national park in central Anatolia, Turkey. It is located in the Kızılcahamam district of Ankara Province. Geography Soğuksu National Park is located about north of Ankara in a transition zone between the western Black Sea Region and the Central Anatolia Region that is dominated by dense forests. It covers in total land area, which was extended in 1979 from its initial area of . The national park area consists of plains between small valleys, which converge in two main valleys fed by a number of streams. The streams Batılganın Creek and Küçük Soğuksu Creek run dry in the summer time. The terrain has a rugged topography. The elevation ranges between above mean sea level with a mean of . The highest peaks are Tolubelen Hill and Arhut Hill . Other notable hills are Harmandoruk Hill , Çakmaklı’nın Doruktepe , Samrıdoruk Hill , Kayabelen Hill , Kel Hill and Kara Hill . Besides Kızılcahanan, other populated places around the national park are small villages such as Karacaören, Sazak, Saraycık and Alveren. Geology The wooded areas of the national park consists of volcanic rocks including andesite, basalt, tuff and agglomerate. Hot springs and cold water sources are found in these areas. The hot springs are evaluated as spa. In the northern part of the national park, petrified woods are found, which were formed by volcanic activation about 10–12 million years ago. A preserved petrified tree trunk of length has diameter. Ecosystem Flora The forests in the national park, which exhibit the characteristics of European-Siberian vegetation, cover an area of . Dominant species include coniferous trees such as Scots pine (65%), larch (24%) and fir (6%). Other notable trees include broadleaves such as oak (5%), alder, aspen (Populus tremuloides), maple, dogwood (Cornus) and black locust (Robinia pseudoacacia). Wild strawberry (Fragaria), wild rose (Rosa canina), wild pear (Pyrus communis), dwarf juniper (Juniperus pseudosabina), wild hazelnut and hawthorn (Crataegus) are common forms of low vegetation (shrubs and herbaceous plants). Fauna There are about 160 bird species in the national park. Near-threatened bird species such as cinereous vulture (Aegypius monachus) and some eagle species build nests in the area. The wooded areas are sparsely inhabited by mammals, including red deer, roe deer, and species of bear, wolf, fox, jackal, weasel, wild boar, rabbit and squirrel. In a bird hatchery established in the national park, chukar