Gorna and Dolna Topchiya Reserves are situated in the river-valley of the Tundzha River in the region of Elhovo. Gorna Topchiya reserve was declared in 1951 and spreads on 106.20 hectares and Dolna Topchiya was declared in 1960 on an area of 470.70 hectares. The two reserves were established aiming to preserve the only remained dense forests inside the country. There are natural deposits of local Ring-necked Pheasant(Phasianus colchicus), nesting colonies of heron (Ardea) and other water swimming birds.
There are also 7 kinds of amphibians, 13 kinds of reptiles, 102 kinds of birds. Gorna Topchiya is situated in Konevets village, Tundzha municipality, Yambol region and Dolna Topchiya - in town of Elhovo, Yambol region.
Balabana Reserve is situated in the town of Elhovo, Yambol district. It has an area of 77.30 hectares.It was declared protected territory in 1960 aiming to preserve habitats of different kinds of birds. It was proclaimed well-kept reserve in 1999.
