Lumberjack World Championships get underway
27 July 2013 Last updated at 08:53 BST
More than 100 competitors have gathered in Hayward, Wisconsin, for the 54th annual Lumberjack World Championships.
With 21 different events, including running across rolling logs and wood chopping, the competitors are battling for $50,000 (£32,500) in prize money.
Louise Minchin and Jon Kay report.