 Complete the following phrase:  The formal front garden area to the Administration Building comprises a grassed square with a row of palms and includes an anchor and three memorials enclosed with white concrete bollards, a white chain and flagpole. The group of memorials depict various events associated with the history and strategic location of the islands: the anchor is from the Port Refuge, salvaged 1981; one plaque commemorates the action between the Sydney and the Emden in the 