How mysterious - a gravestone has been removed
St Johns Church and graveyard, Constitution Avenue, Reid from Anzac Parade.
I think it had fallen over in your picture...you can kind of see it laying in the grass. It's there in the photo I took today, which I'm reposting below.
Discovering Mildenhall’s Canberra
is a joint project between the
Museum of Australian Democracy at Old Parliament House
National Archives of Australia.