Three lakes lie linked across this landscape: Bindegolly, Toomaroo, and Hutchinson. Two are saline and one is freshwater, an unusual pairing that gives the park its character and its richness. In a region where surface water is scarce and unreliable, these lakes act as a refuge, holding on to moisture and life when the surrounding country bakes. They fill and shrink with the rhythm of rain and drought, sometimes brimming, sometimes drawn down to glittering salt flats. Sand dunes fringe their eastern edges, and it is along those dunes that the park's rarest resident takes root, anchored in the loose sand above the water.

That resident is Acacia ammophila, a knotted, twisted wattle that exists as one of only two known populations in the world. Its seedlings have a hard time of it, often grazed off by stock or stripped by parrots before they can establish. The few that make it grow slowly into the park's signature trees, low and contorted, weathered by the harsh inland climate. When rain comes, mainly between March and October, they answer with a flush of bright yellow 'puff-ball' blossoms, sudden colour against the muted Mulga. The park exists, in large part, so this fragile and peculiar tree has somewhere safe to keep growing.

When conditions are right, the lakes erupt with wings. Thousands of waterbirds gather here to feed and to breed, and the numbers can be internationally significant. BirdLife International has identified a 318-square-kilometre area around the lakes as an Important Bird Area, because it has at times held more than one percent of the entire world population of blue-billed ducks and red-necked avocets. More than 195 bird species have been recorded across the park, among them desert specialists like the inland dotterel, Bourke's parrot, Hall's babbler, and the chirruping wedgebill. For a place so deep in the dry country, the sheer concentration of life when the water is high is astonishing.

Lake Bindegolly sits in the Mulga Lands bioregion, a belt of semi-arid scrub defined by the mulga wattle and a feast-or-famine relationship with rain. Parks like this one are not built around a single dramatic feature so much as around a whole working system: lakes that buffer the dry, dunes that hold a rare tree, and a flyway that brings birds across vast distances to a few reliable waterholes. Beyond the park boundary, the lakes of Bindegolly, Numalla, and Wyara form part of a wider network of refuges that keep biodiversity alive across arid Australia. To walk the shoreline here is to watch the desert reveal how much it can hold.

There is a particular magic to water in dry country. Lake Bindegolly is not a grand alpine lake or a famous gorge; it is a low, quiet chain of salt and freshwater on a flat outback plain. But that is exactly what makes it matter. In a landscape where everything else is rationed, these lakes are generous, and life crowds in to take advantage, from migrating ducks to the stubborn wattle on the dunes. Pair it with a visit to nearby Thargomindah and its artesian history, and the park rounds out a portrait of the far southwest, a country that looks empty until you learn where it keeps its riches.