Punaruwu Black Beach (Punaluu BlackSand Beach Park) is located in the south of the Volcanoes National Park on the Big Island of Hawaii, and it also belongs to a special volcanic landscape. Due to the eruption of the volcano, the lava enters the sea, and the shell is hardened under cooling, and it cannot bear the tension of internal steam. It falls apart and breaks into lava fragments. After that, lava debris piled up on the shore, and after years of erosion and polishing by the waves, it eventually became black sand grains. Stepping barefoot on the black sand beach, without piercing their feet at all. This beach is very big and not suitable for swimming, but there are many sunbathing people, in addition, it is also a place where turtles often haunt. However, it takes a lot of luck to see turtles lying on the beach to bask in the sun. We didn't see when we first arrived, thinking that there would be good luck after a while, and I didn't think, I really waited for a turtle that slowly landed on the shore.