Tonale source rock for creating a waterfall. This rock is used to create the resurgence source of a pond waterfall, it was designed with a threaded hole to be able to attach the fittings and pipes of the pump that will send the water to the waterfall. It is made of fiberglass and finished with marble and quartz sands, materials that give it a very natural look and make it extremely resistant to atmospheric agents, even the most extreme!