Parkour's popularity soaring in urban wilds

At first glance, parkour practitioners look like modern dancers unleashed on an impromptu obstacle course.

Usually seen in cities, parkour involves jumping, rolling and vaulting over, under and through the objects found in a typical urban setting. Traceurs, as parkour enthusiasts are called, strive to move as directly and fluidly as possible, using only their bodies and the objects they encounter to propel themselves forward.