Wallcliffe Cave is located just upstream from the mouth of Margaret River. There area few ways  you can get to it. The most interesting way is to walk along the southern bank of the river in the water. Probably best to do in summer. Or you can hire a kayak if you don’t like getting wet. The other way is to follow a car track from the first carpark up from the river mouth carpark. Small cave but interesting rock formations and best of all it’s free!