Bulgaria

There are three parts of the Balkans on the territory of Bulgaria: the Western Balkans, the Central Balkans, and the Eastern Balkans.

An excerpt from the article 34 facts about Bulgaria

In the Central Balkans, there is the highest peak in the Balkans – Botev Peak with a height of 2376 m above sea level. The Eastern Balkans constitute the lowest part of the Bulgarian Balkans.