John Forrest might not be that we'll known in the east but he explored a lot of the western deserts.
I always wonder how Charles Sturt and his party felt when they got to the mouth of the Murray and found that it didn't flow into an inland sea...disappointed i suspect.
And then they turned around and headed back up the river, against the current and in the middle of summer! In typical Australian explorer style the trip home turned into a nightmare, supplies ran out and Sturt nearly died from starvation and never really recovered his health.
They were amazing men in those days, setting off into the unknown. Today we barely go to the shop without turning on the Gamin!