Polaris has announced it will stop selling quad bikes in Australia in less than eight months and is already running down stock.

By looking at the 4.6 metre height of the Gascoyne River as it flows past Yinnietharra Station last week, it is hard to fathom that it hasn't rained on the property for about two years.

A substantial aggregation of prime north-west farming country is up for grabs as its owners prepare to wind down and relocate to the Sunshine Coast after 40 years of agricultural asset building.