Karakestane is a village in Ayancık District, in Sinop Province, Türkiye. Karakestane lies at 443 m above sea level, in the Küre mountains. It has 188 inhabitants. The nearest city is Boyabat, 45 km to the southeast. Beaches nearby: Ayancık (12 km), Ayancık Köyü (12 km), Ali Köyü (13 km). Among the landmarks around are Erfelek Dam (16.3 km). Among the natural features are Tatlıca Waterfalls (16.2 km).