an ancient dark portal to another dimension inside a gigantic cavern+global illumination+dystopia+matrix+star wars+blade runner+4k octane render+utopia+made by sega+volumetric light+futurism+4k full hd+photoreal+photoreal+cinematic+futuristic+sublime atmosphere+imagined by simon bizley+albert bierstadt+herbert james draper+arnold bocklin+caspar david friedrich+sir lawrence+alma-tadema+karl heilmayer+jmw turner+cinematic style