The Marriott Hotel in Haikou in January costs 100 yuan from the hotel taxi to the crater park, and many drivers are reluctant to go because the location is far from the city. We were lucky when we went. The driver told us that after playing, he could help us find a nearby car to pick us up and send us 100 yuan to the old arcade. The entrance ticket for the crater is 60 yuan. The trees are shady and the air is wet. For the northerners, there is no haze. It's too comfortable to breathe. The hill is easy to climb. It can overlook the whole crater. It can also go down to the bottom of the crater. There are mountains and water, volcanic lava, the scenic spot is not very big. It's a leisurely 2.5-hour tour. Overall, it's a good park.