black and white 3D render of a single craggy boulder floating weightlessly in the center of a giant circular portal opening, the portal a bright white glowing disc framed by a thin dark ring set into a pitch-black wall, jagged eroded mountain ridges rising on both sides of the foreground and fading into pale hazy peaks behind, deep shadowed rocky valley at the bottom, rough porous stone texture, high contrast monochrome, fine film grain, silhouette against the bright circle, symmetrical centered composition, minimal surreal sci-fi landscape --chaos 10 --ar 3:4 --exp 100 --raw --profile 73hh66z --stylize 200 --weird 5 --v 8.2