On Christmas Day 1996 a landslip, caused by a leaking water main, led to 80 tonnes of earth and retaining wall from the Restoration terrace next to the Mansion falling to the bottom of the Castle rock. This revealed some remains of the original castle foundations and the bedrock. After a lengthy controversy on the best conservation/restoration approach, the terrace was reinstated with a traditional stone façade. The terrace offers great views to the south of the city, and appeared in the film "Saturday Night and Sunday Morning", a film about the changing attitude of youth in a changing industrial society.