 As part of South Australia 's <unk> , the South Australia Jubilee 150 board granted $ 250 @,@ 000 for work on the fort , allowing construction of a visitor centre . Queen Elizabeth II visited and inspected the site , and newly constructed visitor centre , for almost an hour on 13 March 1986 . For the visit the historical association demonstrated firing of both the 64 and 2 pounder cannons . The visitor centre was officially opened one month after this visit . Governor Dame <unk> Mitchell named the old road " Queen Elizabeth II Walk " in March 1991 ceremony , commemorating the 5th anniversary of the queen 's visit . <unk> subsequent restoration work has been completed on the fort , including the <unk> 's interior . The portion of the muster ground that is not within the caravan park was returned to its original level in 1993 . 
