An hour ago the sunset had radiated across the clouds, turning it molten orange with bands of pink, but now it was gone and the base was covered by the starless, moonless sky. There was no twilight, only darkness. Arnold felt claustrophobic like he was inside a cave. The low sky had become a ceiling of grey-black rock above. Only the cool soothing winds and the first drops of rain let him know that he was out in the open.