The Pololū Trail on Hawai’i’s northern shore is a stunning cliffside hike leading down to a black sand beach and into the Polulū Valley. Credit: Kris Arnold

The Pololū Trail on Hawai'i’s northern shore is a stunning cliffside hike leading down to a black sand beach and into the Polulū Valley. Credit: Kris Arnold

The Pololū Trail on Hawai’i’s northern shore is a stunning cliffside hike leading down to a black sand beach and into the Polulū Valley. Credit: Kris Arnold

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