This relates to land located above shallow underground mines in the Huntly East area where subsidence occurred in around 1977 and where there is still an unconfirmed risk of further subsidence. The boundaries were defined by Coalcorp and the Department of Survey and Land Information and at the time had identified an area of limited risk and an area of higher risk. The area of high risk was derived from the Crown’s Huntly East Land Subsidence Policy 1993–94. The high risk and limited risk areas were combined as one layer in the 2004 DPR. Areas have been identified in Subsidence reports and in accordance with mining activity.