Called stećci (pronounced' 'stech-tsee'), these monolithic tombstones are some of Bosnia and Herzegovina's most recognisable landmarks.

Some 60,000 of these medieval stone monuments lie scattered across the nation's countryside (with a much smaller number found in neighbouring Croatia, Serbia and Montenegro), and are commonly grouped together in necropolises.

Emerging from the greenery of the Bosnian hills and meadows, their vividly rendered designs have been puzzling historians and travellers for centuries, but continue to serve as a symbol of national pride and identity among Bosnia's multi-ethnic population. (BBC)