 Mooney Mooney is the location at which the Sydney-Newcastle Freeway and Pacific Highway cross from the Central Coast into Sydney's metropolitan area at Brooklyn in the Hornsby Shire.Mooney Mooney is significant 'for its association with the early settlement of coastal NSW', according to a plaque at Deerubbun Reserve.In 1844, an early-colonial settler, George Peat, commenced a ferry service across the Hawkesbury River, from Mooney Mooney Point to Kangaroo Point on the southern bank.