Complex sentence: Overgrazing by stock had literally denuded the country of its vegetation leaving little feed for wildlife, waterholes were drying up and even the most experienced Aborigines were finding game and water almost unobtainable.
Split into simpler sentences: Overgrazing by stock had literally denuded the country of its vegetation, leaving little feed for wildlife. Waterholes were drying up and even the most experienced Aborigines were finding game and water almost unobtainable.