Stargach (Bulgarian: Стъргач, Greek: Κουλάτα) is a border mountain, situated between Bulgaria and Greece. It is located east of the Slavyanka Mountain, west of the Beslen hill, south of the Pirin Mountains and north of the valley. With its round outlines, Stargach is a reduced copy of the Slavyanka Mountain. Its highest peak is situated in Greek territory – Stargach or Kulata peak (1,270 m.). The highest peak in Bulgarian territory is Asenov peak (1,218 m.) Stargach is a horst, formed of metamorphic rocks – marble, gneiss and mica. There are also granite and quartz at some places.