"Saddle Road·Saddle Highway" is the world's highest peak of the island on the north side of the island "Mauna Kea" (if the height under the sea is calculated, the top of the mountain is snowy all year round, so locals call it the white mountain. This is the paradise of stargazing enthusiasts, and the top has a very good astronomical observation point: On average, there are more than 300 clear nights a year; the observatory's altitude reduces a considerable part of the atmosphere's impact on observations; and finally, at 20 degrees north latitude, the starry sky can be observed simultaneously in the northern and southern hemispheres. And the second peak, Mauna Loa, passed through the middle.