Derekapı is a neighborhood in Tortum District, in Erzurum Province, Türkiye. Derekapı lies at 1,250 m above sea level, in the Gavur mountains. It has 359 inhabitants. The nearest city is Oltu, 45 km to the east. Among the landmarks around are Khakhuli Monastery (9.0 km), Oshki (20 km) and Tortum Castle (10.7 km). Among the natural features are Tortum Waterfall (29 km).