South Falls and Rapid Falls are two waterfalls located along a creek near West Mulgrave Falls in Wooroonooran National Park, Far North Queensland.

They sit within the remote, densely forested terrain on the back side of Mt Bartle Frere, Queensland's highest mountain. Reaching them requires an advanced, multi-hour return hike from the Windin Falls carpark on Gourka Road.

The route involves bush-bashing, steep elevation changes, multiple creek crossings, and navigation by pink survey tape through dense rainforest — there are no official cut tracks or signage.

The falls reward the effort with smaller cascades, beautiful swimming holes, and frigid rock pools. Visiting with someone experienced on the route is strongly advised, and navigational equipment is essential.

Creek crossings can become hazardous in the wet season.