Passing along the isthmus, where on one side was a steep descent to the shore of the little bay, and on the other the live rock hewn away to wall, shining and sparkling with crystals of a clear irony brown, they next clambered up a rude ascent of solid rock, and so reached what had been the centre of the seaward portion of the castle. Here they came suddenly upon a small hole at their feet, going right down. Florimel knelt, and peeping in, saw the remains of a small spiral stair. The opening seemed large enough to let her through, and, gathering her garments tight about her, she was half-way buried in the earth before her father, whose attention had been drawn elsewhere, saw what she was about. He thought she had fallen in, but her merry laugh reassured him, and ere he could reach her, she had screwed herself out of sight. He followed her in some anxiety, but, after a short descent, rejoined her in a small vaulted chamber, where she stood looking from the little square window Malcolm had pointed out to them as they neared the shore. The bare walls around them were of brown stone, wet with the drip of rains, and full of holes where the mortar had yielded and stones had fallen out. Indeed the mortar had all but vanished; the walls stood and the vaults hung chiefly by their own weight. By breaches in the walls, where once might have been doors, Florimel passed from one chamber to another and another, each dark, brown, vaulted, damp, and weather-eaten, while her father stood at the little window she had left, listlessly watching the two men on the beach far below landing the lunch, and the rippled sea, and the cutter rising and falling with every wave of the flowing tide.