Create an image of Lord Shiva, the revered Hindu deity, seated gracefully in meditation on a majestic mountain peak. Illustrate his divine presence as radiant and powerful, exuding an ethereal glow that highlights his sacred nature. Envelop him in ethereal, swirling mist and towering snow-clad summits, accentuating the serene yet formidable aura of the scene. Capture the essence of Shiva's cosmic energy and strength, portraying him as the supreme force governing the universe. Include the iconic serpent coiled around his neck, symbolizing his mastery over primal forces. The image should inspire awe and reverence, presenting Shiva as the ultimate ruler of the heavenly realm amidst these hallowed heights.