Butter lamp offering at Mahabodi temple

Visualize a hall full of lamps, thousands of them, arranged in long columns neatly, burning continuously and ferociously, filled with the warmth of the lamps, an overwhelming feeling of positive energy.
Welcome to the butter lamp house in Mahabodhi temple at Bodhgaya.

As per Buddhism the offering of light is a means of dispelling the darkness of our own ignorance, giving rise to clarity and wisdom.