demonic ritual chamber deep underground, walls covered in ancient runes and blood, flickering torches casting hellish shadows, pentagrams drawn on the floor with dark energy pulsating, altar with sacrificial remains, shadowy figures in hooded robes chanting, air thick with the smell of sulfur and decay, distant screams and demonic growls, use of 'high resolution', '8k', 'hyper-detailed', 'dark fantasy', 'dramatic lighting' to create intense shadows, 'macro lens' for intricate details, 'HDR' for realistic light and shadow play, 'color grading' for a sinister tone