Haleakala National Park
The hikes at Haleakala are focused on the levels of Haleakala Mountain.
The Summit District offers exploration of the sun-drenched "crater," which is actually a valley. The Kipahulu Area is rain-drenched, subtropical, lush and has many waterfalls. The 8.4-mile Kuapo Gap Trail descends from crater to the coast. The views along the way are stunning, and it's a good way to get a cross-section of the ecological zones on the mountain.
Hosmer Grove Trail is a fascinating interpretative walk that takes you through one of the park's "biological battlegrounds," beginning in an alien forest and ending in native Hawaiian shrubland.
Details mentioned in this article were accurate at the time of publication