Search the site SearchSix Flags' Chicago park sets Yukon Territory retheme, expansionSix Flags Great America will transform its Yukon Territory and Camp Cartoon children's area into Camp Timber Trail next year, the park announced today. Six Flags' Chicagoland park will add three new attractions to the area, which also will see four current attractions rethemed. In total, Camp Timber Trail will include nine attractions. Overview of the new Camp Timber Trail. "Since opening in 1976, Yukon Territory has been home to some of the park's most cherished memories," Park President John Krajnak said.