Hungarian Mountain Bikers Go Underground

Our Geo Quiz takes us to the site of the Underworld Cup of Hungary. The event attracts hundreds of mountain bikers who enjoy the thrill of racing through a maze of dark, narrow tunnels in an abandoned limestone mine on the outskirts of Hungary's capital.



It's this nation's most popular song. It also may be haunted.

The song "Gloomy Sunday" was written in 1933, in Hungary, and has been recorded by artists from Billie Holiday to Björk. Because of its subject matter, some artists have refused to record it. But a record label in Berlin asked musicians to record their versions — and the results are anything but gloomy.