There are quite a few caves in this part of the world, and we opted to visit Ngilgi Cave. When you first enter, you're guided into the Amphitheatre which is a big cave, then you're left on your own devices to explore the Main cave via a series of winding passages and a lot of steps, reaching the deepest part at Cupid's Corner. The LED lighting is subdued but the colours, while subtle, create a good impression. At the far end, there's another guide stationed who explains some of the cave's features and directs you around a loop and back towards the entrance. The whole tour takes about an hour, but since you're on you're own for most of the time, it can take a little less, or as long as you like.
I can't remember how many steps they told us we encountered, but it was a lot, so then we headed to Wise's Winery for a terrific lunch. The food wasn't innovative but it was done very well indeed, and the outlook over the vines and Geographe Bay was memorable.