 Despite being known as "flat", there are a number of ridgy areas on the plain — Western Sydney Parklands and Prospect Hill are between high.Highly elevated suburbs, which typically range between in height, include Leppington and Oran Park to the southwest, Pemulwuy, Cecil Hills and Horsley Park to the greater west, and Greystanes, Seven Hills and Mount Druitt to the northwest.Agriculture is mainly concentrated in the outskirts of the Greater Western Sydney area, such as in suburbs of Kemps Creek, Orchard Hills, Luddenham and Horsley Park, among others, which lie in a countryside.