Radomir (mountain)
Radomir or Sidiropetra, is a mountain on the Bulgarian–Greek border. At or it is the highest peak in the Belasica range. It is also known by its old name Kalabak.
In Bulgarian since 1942, the peak was named after the Bulgarian Emperor Gavril Radomir who took part in the battle of Kleidion in the Belasitsa mountains.
Radomir is located north of Neochori, the nearest town on the Greek side, and south-west of Petrich, the nearest town on the Bulgarian side.