Buffering Glenrock State Conservation Area are the suburbs of Highfields and Kahibah. Glenrock is the only coastal reserve in the area and a popular spot for mountain biking, hiking, trail running and swimming. The area is home to a variety of native animals and protects several ancient Aboriginal sites.
Part of Lake Macquarie, Highfields shares its northern border with Adamstown Heights and its southern border with Kahibah. The suburb is a little under 10 kilometres from the ocean by road.
Highfields is a young suburb and was only established in the 1960s.