Nógrád (county) in the context of "Borsod-Abaúj-Zemplén County"

Northern Hungary (Hungarian: Észak-Magyarország, Hungarian pronunciation: ['eːsɒk 'mɒɟɒrorsaːg]) is a region in Hungary. As a statistical region it includes the counties Borsod-Abaúj-Zemplén, Heves and Nógrád, but in colloquial speech it usually also refers to Szabolcs-Szatmár-Bereg county. The region is in the north-eastern part of Hungary. It borders Slovakia to the north, the Northern Great Plain region of Hungary to the south-east, and the central region of Hungary to the south-west. The region's centre, largest, and capital city is Miskolc.

Heves county (Hungarian: Heves vármegye, pronounced [ˈhɛvɛʃ]) lies in northern Hungary, between the right bank of the river Tisza and the Mátra and Bükk mountains. It shares borders with the Hungarian counties Pest, Nógrád, Borsod-Abaúj-Zemplén and Jász-Nagykun-Szolnok. Eger is the county seat.

Cserhát ([ˈtʃɛrhaːt]) is a mountain range in Hungary, part of the North Hungarian Mountains. It is divided between Pest and Nógrád counties. Its highest point is the Karancs with an elevation of 729 metres above sea level.

Cserhát stretches from Cserhátalja to the valley of the Ipoly (Slovak: Ipeľ) river. Its central part is mountainous, covered with forests, while its southern and northern parts are hilly.

The Ipeľ (Slovak; pronounced [ˈipeʎ]) or Ipoly (Hungarian) (German: Eipel, archaic Slovak: Jupoľ, Latin: Bolia) is a 232-kilometre (144 mi) long river in Slovakia and Hungary, a tributary of the Danube River. Its source is in central Slovakia in the Slovak Ore Mountains. It flows south to the Hungarian border, and then southwest, west, and again south along the border until it flows into the Danube near Szob.

The Ipeľ flows through or creates the border of the Banská Bystrica and Nitra regions in Slovakia, and Nógrád and Pest counties in Hungary.