Ключевые слова: amethyst formation, bioluminescent cave, bioluminescent minerals, bioluminescent mining, bioluminescent rocks, cavern portal, colorful mineral layers, crystal cave, crystal tunnel, deep cavern glow, deep earth, enchanted cave, enchanted cavern, enchanted subterranean, gemstone, gemstone portal, geode, luminous crystal shaft, luminous geology, luminous minerals, mineral deposits, mineral exploration, mineral formation, mysterious cavern, mystic underground, mystical cavern, mystical underground, natural geology, neon mineral, purple mineral, radiant crystal cluster, radiant formations, radiant geode, radiant geodes, sapphire glow, underground cavity, underground glow, underground luminescence, underground opening, underground portal, vibrant crystals, vibrant mineral display, vibrant stalactites, violet crystals, violet mineral deposits,