The first of March is a celebrated day in Bulgaria, symbolising the arrival of Spring. Bulgarians exchange coloured threads (Martenitsa) to be worn until a blossoming tree or stork is seen. The Martenitsa are then hung from the branches.
Rocks for Rocks. Ken Hensley, best known as member of the famous Uriah Heep, and Bulgarian rock band Sunrise staged a concert in 2009 in support of the Belogradchik rocks, a nomination in the world's new Seven Wonders ranking.