The Mountains of Vyrsini, also known as Megalo Livadi, is a mountain range in Thrace, on the Greek-Bulgarian border. Located between the regional units of Rodopi and Evros, it is a natural continuation of the mountain range of Eastern Rhodope to the east.

To the south of the mountain range, a complex of picturesque villages known as the Pomakochoria is the homeland of the Greek Pomak community. Scattered prehistoric rock paintings have been found in an area very close to the peak Chilia.

The mountains are covered with deciduous oak forests; the flora also includes species such as elms, grey alders, willows, plane trees, poplars, but also beech forests. Bellflowers, fringed pinks, various wild orchids, and violas grow here.