Established in 1985, California Quarry Products has the largest selection of landscape materials in bulk, and the largest skip for loading such products, in the Antelope Valley. Located in Lancaster on the edge of Palmdale, California, we stock our yard with over 25 different colors and sizes of premium decorative landscape rock (including Arizona & Visalia river rock), soil amendments (compost, humus, and planter mix), landscape bark mulches & playground chips, sand & gravels, decomposed granite (DG), crusher fines, fill dirt, decorative landscape boulders, and more!