Nature's Typography: Rocky Cliffs Forming 'NIK'

Design a highly detailed and realistic concept art of rocky cliffs shaped like the letters 'NIK'. The environment should be a vibrant, dense forest with a flowing river and cascading waterfall nearby, capturing the essence of nature. The cliffs should exhibit intricate stone textures and formations, with dynamic lighting from a rising sun casting warm highlights and shadows. This artwork will serve as a reference for crafting a 3D model in a cinematic scene