later the aborigines who had passed Motion_directional through on their way home were found Know at middle creek , a camping place on the aboriginal trading Body_movement route from the grampians to the greenstone quarry at mount william near lancefield .

The expedition was undertaken in retaliation for the Rover incident , in which the `` Rover '' , an American bark , had been wrecked Damaging and its crew massacred Killing by aboriginal Paiwan warriors in March 1867 .