The Great Allegheny Passage (GAP) is a long-distance hiker and biker trail spanning Pennsylvania and Maryland. There is a rich history and story behind the building of this trail, and MarketSpace designed and developed an informational and engaging website to share this story. The site houses information such as historic data, stories and images that were collected over the 40 years from when this impressive trail was being built. Site visitors can explore an interactive map and timeline and by reading more about the people and organizations involved in building the trail and the stories that are shared about the building of the trail.