Stepin Lug (Serbian: Степин Луг) or Gaj (Serbian: Гај) is a park-forest and, for the most part, non-residential suburban settlement of Belgrade, the capital of Serbia. It is located in Belgrade's municipalities of Voždovac (southern part) and Zvezdara (northern part). It is part of the forest complex Stepin Lug-Baba Velka-Torlak-Jajinci, which is the largest wooden area in Belgrade.
Stepin Lug is located on the south-eastern outskirts of Belgrade, 13 km (8.1 mi) from downtown. It is a large, wooded area, roughly bordered by the neighborhoods of Veliki Mokri Lug on the north, Kumodraž on the north-west, Jajinci and Selo Rakovica on the west, Beli Potok on the south and Bubanj Potok on the east. The southern border is marked by the road of Kružni put and eastern by the Belgrade-Niš highway.
Stepin Lug or formerly known as Titov Gaj or just Gaj, is a memorial complex, a park-wood with an area of 8.5 km2 (3.3 sq mi), out of which 4.78 km2 (1.85 sq mi) has been protected and maintained.
Stepin Lug can be divided into several areas:
The area has a 13 distinct tree communities, but the number of the separate species is three times larger as many species were planted later even though they are not autohtonous, including both conifers and deciduous trees. They include:
Evergreen trees:
Deciduous trees:
In March 2015, an area of 2 ha (4.9 acres) had been reforested with the white ash and red oak, one hectare and 2,000 seedlings each.