HomeProductsBulk Materials12″+ River Rock (Boulders)12″+ River Rock (Boulders)$73.99/half yard12″+ Delaware river rock are large boulders with a variety of uses. Boulders are most commonly used in water features but can also be used as retaining walls, or just a feature in a landscape bed. 12"+ River Rock (Boulders) quantity Half YardCalculate MaterialsDelivery date or pick up on location can be scheduled during the checkout process. Add to cart Material CalculatorUse our global Material Calculator to compare material types based on your project needs. Fill in the boxes below and select Material to be Used for comparison.Area to be Filledsquare feetInstallation DepthinchesMaterial to be UsedSelect Material2B Limestone2A Modified StoneMulchNutri-SoilTotal Area to be Coveredcubic yardsEstimated weight per yardlbs per yardEstimated required weighttonsCommentsThis field is for validation purposes and should be left unchanged.