The main features of environmental significance at Casey are the large areas of mosses and lichens.
Casey is fortunate in having two protected sites very close to the station and two others nearby.
The Antarctic Specially Protected Area (ASPA) near the station protects moss and lichen communities that are the richest anywhere in Antarctica outside the Antarctic Peninsula. Information on ASPAs can be found at Protecting and Managing Special Areas.
Other areas which merit special protection in the vicinity of the station are Ardery and Odbert islands, the North-east Bailey Peninsula, the Clark Peninsula, and the Frazier Islands.
The key places of cultural heritage significance are off the station: some of the field huts and the buried U.S. Wilkes station.
Vulnerable to human impacts, the protection of these areas is facilitated by the use of entry permits, and the requirement that the conduct of all activities within them is in accordance with the management plans as outlined the pages listed below.
There are a number of maps that refer to Casey which can be downloaded by visiting the AAD Data Centre map catalogue and searching by place names.