10 levs - Natural phenomenon - Chudnite Mostove (Miraculous Bridges)
The obverse of the coin features the logo of the Bulgarian National Bank and the year ‘1879’ inscribed on the ribbon. The inscriptions ‘БЪЛГАРСКА НАРОДНА БАНКА’ (Bulgarian National Bank), the nominal value of the coin ‘10 ЛЕВА’ (BGN 10) and the year of issue ‘2012’ go in circumference. The reverse features the image of Chudnite Mostove with ‘ПРИРОДЕН ФЕНОМЕН ЧУДНИТЕ МОСТОВЕ’ (NATURAL PHENOMENON WONDROUS BRIDGES) inscribed in circumference.
The Marvelous Bridges (Bulgarian: Чудни[те] мостове, Chudni[te] mostove) is a rock formation in the Rhodope Mountains in southern Bulgaria. It is located in the Karst valley of the Erkyupryia River in the Western Rhodopes at 1,450 metres above sea level, at the foot of Persenk Peak.