Kalahasti
This is an important temple dedicated to Lord Shiva. This temple has one of the elemental lingas, the vayu (air) linga. There is a lamp inside the inner sanctum that is constantly flickering despite the lack of air movement inside. The air-linga can be observed to move even when the pujaris close off the entrance to the main Deity room, which does not have any windows. You can see the flames on several ghee lamps flicker as if blown by moving air. The linga is white and is considered Swayambhu, or self-manifested.