Black Point is made of basalt columns from a lava flow that occurred 135 million years ago.

The gneiss basement rocks project through the shallow waters to form small islands in the Inlet.

Sandy Island in Windy Harbour is part of the park; it is an important nesting site for seabirds, with up to 300,000 breeding pairs of flesh-footed shearwaters, a high proportion of the global population.

Facilities available to visitors include barbecues, toilets, 4WD tracks, camp sites, disabled access and picnic areas.

The outdoor education organisation, Outward Bound, operate within the park taking school groups on hiking expeditions.