Good walks in northern Australia besides Larapinta

Hi,
I've been looking for some good multi day hikes to do in northern Australia, aside from the Larapinta trail, but haven't had much luck. I'd be particularly interested in any in Karijini NP, Purnululu NP or in Arnhem land, but I'm interested in anything really!
So any suggestions?
I've been looking for some good multi day hikes to do in northern Australia, aside from the Larapinta trail, but haven't had much luck. I'd be particularly interested in any in Karijini NP, Purnululu NP or in Arnhem land, but I'm interested in anything really!
So any suggestions?