The paver base refers to the foundation layer of pavers used in patios, walkways, and other outdoor hardscapes. Although stone dust is a possibility, it is typically made up of broken stones of varying sizes. This coarse material is required to lay a sturdy, level foundation for adequate drainage and to support the pavers above. https://modutile.com/product/gravel-pavers-outdoor-basketball-court-base-24x24/