"A dark, ancient dungeon entrance set within a crumbling castle

"A dark, ancient dungeon entrance set within a crumbling castle, hidden deep within an ominous forest. The scene is shrouded in heavy mist and shadow, with faint moonlight piercing through the dense canopy above. The dungeon's stone archway is cracked and overgrown with twisted vines, and skeletal remains lie scattered around the entrance. A solitary, weathered torch burns dimly beside the entrance, casting eerie, flickering light on the stone walls. The atmosphere is foreboding, with a sense of forgotten evil lurking within. The entire image is in grayscale, with high contrast between the dark shadows and the pale light, creating a haunting and mysterious aura