Rocks and Ropes Adventure Playgrounds combine the thrill of roaming across wooded hills, over creeks, and through caves with the physical, social and safety benefits of the modern playground. Exploration, challenge and a sense of adventure combine with affordability, low maintenance and ease of installation to make Rocks & Ropes the perfect solution to your next project. PolyFiberCrete is a revolutionary lightweight blend of materials which retains the strength and value of concrete while offering exceptional texture for climbing. Built with a steel core, rope bridges are designed to resist damage and can be configured to challenge all levels and ages.