This cave is located half way along the road road from Ao Nang to Phuket (an hour from Ao Nang, a bit further from Phuket).
It is located only a couple of minutes off the road, so makes a convenient stop to break a taxi journey between Ao Nang and Phuket.
It is not an extreme experience, more of an experience of being awed by the beauty and peculiarity of some of mother Nature's creations.