Tunnel Creek

Tunnel Creek National Park, located in Western Australia's Kimberley region, features the state's oldest known cave system. The 750-meter limestone tunnel, formed over 350 million years, traverses beneath the Napier Range, offering a unique underground experience. Visitors wade through freshwater pools, navigate rocky passages, and observe impressive stalactites and stalagmites. The cave is home to various bat species, freshwater crocodiles, and indigenous rock art. Accessible via unsealed roads, the park is best visited between May and September, as it is generally inaccessible during the wet season.