 As part of South Australia 's sesquicentenary , 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 Roma Mitchell named the old road " Queen Elizabeth II Walk " in March 1991 ceremony , commemorating the 5th anniversary of the queen 's visit . Considerable subsequent restoration work has been completed on the fort , including the barrack 's interior . The portion of the muster ground that is not within the caravan park was returned to its original level in 1993 . 
 As part of South Australia <a href='null_genetive' title='1'><mark>'s</mark></a>sesquicentenary , 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 Roma Mitchell named the old road " Queen Elizabeth II Walk " in March 1991 ceremony , commemorating the 5th anniversary of the queen <a href='null_genetive' title='2'><mark>'s</mark></a>visit . Considerable subsequent restoration work <a href='been_done' title='3'><mark>has</mark></a> been completed on the fort , including the barrack <a href='null_genetive' title='4'><mark>'s</mark></a>interior . The portion of the muster ground <a href='null_relcl' title='5'><mark>that</mark></a><a href='negative_concord' title='6'><mark>is</mark></a> <a href='negative_concord' title='7'><mark>not</mark></a>within the caravan park was returned to its original level in 1993 . 
As part of South Australia  sesquicentenary , da 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 hr on 13 March 1986 . fir the visit the historical association demonstrated firing of both the 64 and 2 pounder cannons . The visitor centre was officially opened one month after dis visit . Governor Dame Roma Mitchell named the old road " Queen Elizabeth II Walk " in March 1991 ceremony , commemorating the 5th anniversary of tdaqueen  visit . Considerable subsequent restoration wrk done been completed on thdaort , including the barrack  interior . The portion of the muster ground ain't within thedaravan park was returned to its original level in 1993 .