We weren't expecting much of Wyndham, but went for a drive up there to have a look anyway. It was a nice drive up, and an interesting view from the lookout over the mud/salt flats.
We did a detour on the way home via an Aboriginal art site and a prison boab tree. It's hollow in the middle, with an opening on the other side.
We also followed a sign in to 'The Grotto' and discovered there was a swimming hole at the bottom of a few hundred steps... we decided not to do the steps but it sounded like a group of backpackers were having fun in the water.
We stood in what would be quite a waterfall during the wet season.