Natural Rubble Stone is a strong, natural material, originally collected from riverbeds where the flow of the water made them round. The fact that granite cobblestone pavers are a naturally slip-resistant surface is a huge benefit. This is due to the stone rough, durable surface, which prevents slipping and makes it safe to walk on even in the wettest conditions. Natural Rubble Stone prevents a road from getting muddy when it rains or from getting dusty in dry weather. If a stone did need replacing for any reason, it was easily dug up and a new one put in its place.