A former coal-mining town in southern Colorado is probably the last place on earth that skaters would expect to find a world-class skatepark. But ever since 2003, when this 14,000-square-foot concrete masterpiece was carved into a gravelly hillside above the city of Trinidad, skaters from all points of the compass have come to pump through its meandering snake run and vertical bowls. The Seattle-based skatepark construction outfit Grindline, which designed and built the creation, once again demonstrated how only a skateboarder's touch can master the subtleties that make a skatepark both fun and challenging. Some of the most engaging obstacles are the unassuming mogul-like bumps and the small spine ramp -- where both experts and amateurs can find a line.