Crystal Cavern Portal Activation

Wide symmetrical shot inside enormous underground crystal cavern as ancient portal structure activates with cascading energy. Camera: 20mm ultra-wide lens, f/5.6, locked centered composition on portal arch, slight low angle emphasizing scale. Lighting: Crystal formations refracting and multiplying portal energy glow, deep blue ambient from crystal walls, golden energy pulse from portal center. Color palette: Amethyst purple crystals, golden portal energy, deep sapphire blue ambient, white energy sparks, obsidian black rock. Physics: Energy spirals inward following electromagnetic field lines, crystals resonate and vibrate at increasing frequency, loose stone debris lifts off ground from energy field, light refracts through crystal geometry creating natural caustic patterns on walls. Actions: - Dark cavern with faint crystal glow, portal arch dormant (0-3s) - Energy pulses begin at arch base, climbing upward along carved runes (3-6s) - Full portal activation with swirling golden vortex, crystals resonating (6-10s) - Portal stabilizes revealing view of alien landscape through its surface (10-14s)