Description: The reverse depicts Bulgaria's Ropotamo river on a map, with a water-lily, canes, and a cormorant catching prey—typical of the reserve's flora and fauna. Around the edge is the inscription ‘НАЦИОНАЛНИ ПАРКОВЕ И РЕЗЕРВАТИ’ (NATIONAL PARKS AND NATURE RESERVES).
Inscription: НАЦИОНАЛНИ ПАРКОВЕ И РЕЗЕРВАТИ
Translation: NATIONAL PARKS AND RESERVES