Waianapanapa State Park is highly recommended by many travelers. After visiting it, it really feels beautiful. It's a black rock formed by volcanoes and a black beach. The waves impact on the rocks and form huge waves. It's very spectacular. In addition to looking at the waves, I can also cross a small section of black pine forest dense road, and then go down to the beach to swim. I stayed here for two hours to take pictures, but I still have no idea.