Both Greenhill and Waterfall Gully are both suburbs of what city?
Waterfall Gully, South Australia Waterfall Gully is an eastern suburb of the South Australian capital city of Adelaide. It is located in the foothills of the Mount Lofty Ranges around 5 km east-south-east of the Adelaide city centre. For the most part, the suburb encompasses one long gully with First Creek at its centre and Waterfall Gully Road running adjacent to the creek. At the southern end of the gully is First Falls, the waterfall for which the suburb was named. Part of the City of Burnside, Waterfall Gully is bounded to the north by the suburb of Burnside, from the north-east to south-east by Cleland Conservation Park (part of the suburb of Cleland), to the south by Crafers West, and to the west by Leawood Gardens and Mount Osmond.
North Rocks, New South Wales North Rocks is a suburb of Sydney, in the state of New South Wales, Australia, located 26 kilometres north-west of the Sydney central business district. Following the amalgamation of council areas in 2016, the majority of North Rocks falls into the council area of the City of Parramatta. Streets north of the M2 Hills Motorway are within The Hills Shire.