Ondava in the context of Nižná Polianka

Topľa (Hungarian: Tapoly, German: Töpl) is a river in eastern Slovakia and right tributary of the Ondava. It is 131.4 km (81.6 mi) long and its basin covers an area of 1,544 km (596 sq mi). It rises in the Čergov mountains, flows through Ondava Highlands, Beskidian Piedmont, Eastern Slovak Hills and Eastern Slovak Flat and flows into the Ondava in the cadastral area of Parchovany. It flows through the towns of Bardejov, Giraltovce, Hanušovce nad Topľou and Vranov nad Topľou.

The Ondavská Highlands (in Slovak, Ondavská vrchovina) is a mountain range in the Prešov Region of Slovakia, named for the Ondava River. The mountains are part of the Lower Beskids ranges (known in Polish terminology as the Central Beskids), which are in turn part of the Outer Eastern Carpathians.

The mountains are characterized by gentle ridges, mostly wooded in deciduous forests of oak and beech, with long valleys formed by the Ondava and Topľa Rivers, and numerous hiking trails throughout. The valleys are occupied by agricultural lands.

The Laborec Highlands (in Slovak, Laborecká vrchovina) is a mountain range in northeastern Slovakia, part of the Lower Beskids of the Outer Eastern Carpathians.

The range is composed of Carpathian flysch. Bordered in the north by the Polish national border and to the west by the Ondavská Highlands, its ridges typically reach a height of 500 to 700 metres. The highest point is Vysoký Grúň, at 905 metres. The region is drained by the Laborec River and, in its western portion, by the Ondava.