A couple of hours’ drive north-west of Mt. Isa and beside the Northern Territory border, the Wiliyan-ngurru National Park is a semi-arid area with eucalypt woodlands, grassy plains, and other interesting natural features. Check out the dramatic caves and sinkholes—though public access to the caves isn’t allowed, you can get a safe view from Great Nowranie Cave. Camping isn’t allowed in the park, but caravan parks and private campsites can be found near Camooweal.