Yen Y.
Google
We rented a car and found this park by Google Maps. The beach is nice, but there are many people in the cave, too crowded! Mainly tourists from cruise ships. Recommended to avoid come here on the cruise ships days! Local tour charge $200/ each person to bring you here have a swim, or you can come here by yourself for free, Your choice!
The cave does not have detailed directions, but passed the Time Moore's Jungle pool, keep continue stay on the right, it is not difficult to find.