Imagine a colossal cavern bathed in the soft, diffused glow emanating from a massive, pulsating gemstone, reminiscent of the lighting in Art Deco skyscrapers. Towering stalactites, geometric and stylized like Art Deco architecture, reach down towards a central pool adorned with intricate, geometric patterns. Scattered skeletal remains, hauntingly beautiful and stylized, hint at a lost civilization with advanced technology, all rendered in the elegant, geometric forms of Art Deco. The scene evokes a sense of mystery and a forgotten civilization with a touch of haunting beauty.