The Haleakala crater is the world's largest extinct volcano and a famous place to watch sunrise and sunset. It used to be a scene for Mars movies, and the landscape and plants were very strange. Cloud sea can be seen everywhere. In addition, because the volcanic landform here is very similar to the surface of the moon, the complex and diverse volcanic landscapes, like landing on the moon, astronauts will first come here to simulate the lunar walk before landing on the moon. ,