While not completely intact, its four sides of one room and your viewing the side facing the ocean. This side is actually painted like camoflauge and there is a white marking that was made more recently to show the direction of the trails. I believe it used to be two stories but only one has survived.
The trails to reach it are very bushwacky but its not too difficult. Its best to wear long sleeve unless you don't mind get scratched up. Its a trail that breaks off from the Lung Ha Wan Country Trail at the southern beginning. Its best to go with someone who knows the route depending on how you come back.