Located 8km East of Bencubbin on Marshall Rock South Road on the way to Pergandes sheep yards. The reserve remains a great place for bushwalking, bird watching and viewing the wildflowers. One of the best reasons to visit the site has to be the spectacular views from the top of Marshall Rock where one can see Lake McDermott, vast agricultural lands and even the Bencubbin Wheatbins. The Reserve covers 1.4 square kilometres and is bounded by private farming land on every side.