When the Temple is closed for Winter. a lamp is lit and it remains inside the sanctum sanctorum. When the Temple is re-open after 6 months, the lamps are found lit and even the flowers inside are found fresh.

This is the lamp which was lit for 6 months. This was shot on the opening day when the Lamp was brought out after 6 months. It is widely believed that Narad Muni offers prayers to the Lord here during the 6 months when the Temple is closed for Public.