(ultra-detailed:1.4), (intricate details:1.5) upper half-sphere of  enormously-huge titanic death star laying on the bottom of deep underwater ocean and show some life by being powered on, dim light, sense of dread, something terrifying, view from above  only upper half-sphere is visible to an eye, due to huge size of dread   titanic construction (ray tracing:1.5), insane details, absurdres, plasma, and electrical glooming,