1: Nicholas Walkowiak, 5, from West Mifflin, rolls on his stomach on his skateboard on Saturday at the South Park Skatepark in Bethel Park. 2: Alex Chafin, 18, from Baldwin, skateboards on Saturday at the South Park Skatepark in Bethel Park. (Photos by Haley Nelson/Post-Gazette) #Pittsburgh #PGH #412 #skateboarding #skateboardpark #SouthParkSkatepark #BethelPark #PGPhotos