 It comprises approximately 32 hectares and is considered a significant cultural landscape, exhibiting a diverse range of flora and provides an early example of nature conservation efforts in South Australia from the 1950s.The Reserve also contains remnants of the original 1880s Adelaide to Melbourne railway line, including an original single-track tunnel and concrete viaduct buttresses.The Reserve contains the first National Trust of South Australia plaque to be erected in South Australia, which was unveiled in 1959.