The video below I got sent today, and the one above a bit earlier. On these can be seen how the lingam and panipitha I carved out of granite got a waterflow. The lingam is a symbol for Shiva, and is regarded by believers not just as an image, but as Shiva itself. During a ritual of ablutions (abhishekam) , during recitation of Vedic chants, water is poured over the lingam.
In this case, the water is poured over the lingam by means of a pump. The outflow winds around the lingam twice, a reference to the cobra that winds around Shiva's neck. Because this Adishesha actually has five heads, in the future a bronze five-headed serpent will be added.
Whereas the lingam is the symbol of Shiva, the yoni or panipitha (the basin in which the lingam rests) is the symbol for Shakti. Thus, Shiva and Shakti are the combination of God in his aspect of Being and God in her aspect of creation, ie Consciousness and Manifestation.
The second video shows how the water flows back to the ditch via a stainless steel gutter.