Generate an awe-inspiring digital art masterpiece depicting a lone warrior standing atop a colossal dragon's skull, gazing out over a vast and treacherous landscape. Render the warrior in intricate detail, adorned with gleaming armor and a flowing cape. Depict the dragon's skull as an ancient and weathered relic, its bone-white surface etched with centuries of stories. Utilize vibrant colors and dramatic lighting to convey the warrior's indomitable spirit and the vastness of the unforgiving world that surrounds them.