Her free, long and black hair represents nature's freedom from civilization. Under the third eye of kali, the signs of both sun, moon and fire are visible which represent the driving forces of nature.
“ “Durga becomes angry, her face becoming dark as ink. Suddenly the goddess Kali springs from her forehead.” Kali is Durga’s rage, fury, and bloodlust unleashed onto the battlefield. “She roars loudly.