Wide expanses of Mitchell grass plains and spinifex woodland are protected in this national park on the Barkly Tableland, a peaceful stopover for weary travellers and ideal for seasonal birdwatching.

Wiliyan-ngurru National Park features caves and sinkholes that were formed when water percolated through 500-million-year-old layers of soluble dolomite creating caverns linked by vertical shafts up to 75m deep.

Relax and refresh at this pleasant stopover on the Barkly Highway. Enjoy a picnic at Nowranie Waterhole day-use area. Take the short 70m (return) Grade 2 walk, on the Little Nowranie Cave walking track or the 220m (return) Grade 2 Great Nowranie Cave walking track. Be extremely cautious around the edges of the sinkholes. Access inside the caves is not allowed.

Look for a variety of birds including waterbirds and woodland species at different times of the year. Ride your mountain bike through the national park's internal roads.