Because it is made up of two mountains and a valley. We live in the valley. Today I hiked up (paritally) one of the mountains. The other is haleakala, the volcano.
Terri and I attempted this hike, but ended up on a trail that led to the other side of the mountain, folks used this trails years ago. We took the trail today that went straight up. I made it up halfway and then we turned around. I have wanted to hike this trail since before I moved here. I want to go again and make it to the top. I am told there is a green meadow, I think I'll pack a lunch and hang out there.