There are many caves, of varying sizes and features, within Leeuwin-Naturaliste National Park in Western Australia. It's an area known for its cave network, drawing tourists year after year.
All are supported by a terrific museum network and excellent exhibits which dissect the history of caves and the science of how and why they form.
None, have the natural feature that Lake Cave can boast, that reflective quality that truly doubles the pleasure of guests because of the body of water that flows through the cave under the stalactites. Entering the cave through a grove of towering Karri trees and almost sinister looking formations of black stalactites which have dried on the outside of the cave to descend down a staircase so steep and so narrow you have to bend almost to your knees while entering the actual mouth of the cave makes for an eventful beginning but it truly is the natural lake inside Lake Cave that thrilled me most.
Photographers beware, you won't be given a lot of time to take long exposure shots, needed in the low light, and flood lights do not remain on for the full duration of your visit. However, it's well worth the effort to try for a few good shots.