Watch The Cult of Concrete (1970) : Full Movie Online Free The incredible story of Mark Hubbard; A Seattlite who sparked the modern concrete skate park revolution literally from his backyard. The film documents how Mark and his friends started with a dream to build there own projects to eventually becoming a booming business building parks for cities and towns all over the world. The film tells the history, process and eventual result of their efforts and how it affects the kids and local enthusiasts. It's a story about fighting for your dream and never giving up.