Nature's Zen.... This realistic rock water feature is simplicity itself and pondless. Bubbling, streaming water saturates the cast stone surfaces, rich with stain and texture. The included underground basin allows the illusion of water flowing endlessly, without source or end point. Dressed with your pebbles of choice, this hypnotic Bubbling Rock Fountain forms the focus of a tranquil, natural garden feature. The Underground Basin is included with the Bubbling Rock Fountain. Made of sturdy polypropylene, this two-piece reservoir is installed in ground. The Bubbling Rock is set on top, and the basin is camouflaged. Pebbles not included.