Diamantina have been operating expeditions to the Simpson Desert and Lake Eyre Basin since 1990. Diamantina have crossed the desert over 100 times, along every track, and off track as well. With this experience, they have designed what they believe is the best Simpson desert expedition. The deserts of the Lake Eyre basin are unlike any other in Australia. The sediments that flow down the great river systems of the Diamantina and Cooper are raised by the wind and dumped into vast longitudinal sand dunes. They hold less vegetation than the Western Deserts, interspersed with its salt lakes, clay pans and spinifex. In places there are gidgee groves in the interdunal corridors, gnarled like ancient olive trees. Amid all this beauty is one of the toughest four wheel drive challenges on the planet. This expedition is far more than just the Simpson Desert. You will travel the historic Birdsville Tracks, rich in Aboriginal and European heritage, and explore lesser known gorges in the Flinders Ranges, as well as trek north from Dalhousie to historic Old Andado Station and on to Alice Springs.