set: A group of people ride skateboards at a skate park.  A composite image of a skateboarder in yellow; the image shows the skateboarder in 7 different positions from left to right as he goes from a crouched position to a jump and back down again.  A picture of a man in different positions while skateboarding on a ramp.  The image shows the progression of a jumping skateboarder. Combined images of skateboarder performing a stunt in a skate park.