Great Well

"He was at last in a great chamber, a vast hollow in the mountains center. The roof was so high above the Ice-glazed tiles of the floor that the snow flurried down from its upper reaches, leaping whirling clouds of snow like armies of tiny white butterflies. In the center of the chamber was a monstrous well, whose mouth flickered with pale blue light, and which seemed the source of a hideous, heart-squeezing fear. Some heat must have been floating up from its unguessable depths, for the air above it was a roiling pillar of fogs, a misty column gleaming with diffuse colors like a titan icicle catching the suns light." The Dragonbone Chair, Page 404