Kurt Frieden's hot air balloon is pulled through a rapeseed field for landing near the city of Geneva April 10, 2011. Thirty balloons took part in the 5th Montgolfiades balloon festival which takes place from April 8 to 10. The balloons took off in various parks in the city center and landed in the nearby countryside. REUTERS/Denis Balibouse (SWITZERLAND - Tags: ENVIRONMENT SOCIETY)