Haleakala Crater is the world's largest extinct volcano and is a famous place to watch the sunrise and sunset. It used to be the location of Martian movies, and the landforms and plants are very strange. The sea of clouds 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 landforms seem to be on the moon. Astronauts will come here to simulate the moon walk before landing on the moon.
It doesn't feel like the surface of the earth is more like an alien planet. I don't know what it was like tens of millions of years ago. In addition to the crater you can take a look at, there is also a special plant next to it, which is only found around this volcano, and only here in the world.