Above the Redwall come alternating layers of red sandstone and shale 1,000 feet thick, then comes the next pale-blue layer.The topmost layers are a yellowish limestone.

• 在"红墙"的上方，是红色的沙岩和1 000 英尺厚的页岩交替叠层，然后是浅蓝色的沙岩层，最上层是淡黄色的石灰石。