Showing off their chops at the Lumberjack World Championships

At the Lumberjack World Championships, there is never a dull moment. Razor-sharp axes and saws of all sorts slice through logs of aspen. When the competitors aren't chopping wood, they're climbing it, up to 90 feet in the air, racing across it, rolling on it.

Over the course of one summer weekend in Wisconsin, there are more than 20 different events.

The festivities begin with a ceremonial log-roll lighting of the torch. "This has been called the 'Olympics of the forest,'" said Nancy Knutson, who does marketing for the Lumberjack World Championships. "This this year we've got competitors from the Czech Republic, Sweden, Japan, Canada, and the United States."