11. Each is long, in diameter, and is encased in a brick lining to conserve heat. 12. The biggest surprise was how well the brick lining had stood up to the fire. 13. The aqueduct consists primarily of a horseshoe-shaped brick lining that is in diameter and high. 14. However, British ice houses were commonly brick lined , domed structures, with most of their volume underground. 15. The original brick lined vaulted safe still survives. 16. The well built to contain the spring waters is brick lined and approximately 4 m deep. 17. Brick lining may occur further inside the tunnel.18. The sough's entrance portal is constructed from brick and stone and leads into a brick lined culvert. 19. It is because of the red brick lining that the river is sometimes called'The Red River '. 20. Directly to the west of the boilers is a brick lined , sunken area with remnant concrete flooring.
