Pobiti Kamani, Bulgaria. Pobiti Kamani is considered the only desert in Bulgaria and one of few found in Europe and is a natural landmark in Bulgaria since the 1930s. The desert consists of sand dunes and several groups of natural rock formations on a total area of 13 square kilometres (5.0 sq mi). The formations are mainly stone columns between 5–7 metres (16–23 ft) high and from 0.3–3 metres (0.98–9.84 ft) thick. There are a number of theories regarding the phenomenon's origin. The pioneering hypothesis can be divided roughly into two groups: suggesting an organic (coral activity) or abiotic (prismatic weathering and desertification of the rocks, formation of sand and limestone concretions, or lower Eocene bubbling reefs) origin.

Pobiti Kamani, Bulgaria. Pobiti Kamani is considered the only desert in Bulgaria and one of few found in Europe and is a natural landmark in Bulgaria since the 1930s. The desert consists of sand dunes and several groups of natural rock formations on a total area of 13 square kilometres (5.0 sq mi). The formations are mainly stone columns between 5–7 metres (16–23 ft) high and from 0.3–3 metres (0.98–9.84 ft) thick. There are a number of theories regarding the phenomenon's origin. The pioneering hypothesis can be divided roughly into two groups: suggesting an organic (coral activity) or abiotic (prismatic weathering and desertification of the rocks, formation of sand and limestone concretions, or lower Eocene bubbling reefs) origin.. Learn more.