Nā Pali Coast State Wilderness Park shared by @travelleisure says: ""The Earth's wrinkles are on spectacular display along Kauai's Nāpali Coast, where sheer, fluted sea cliffs (pali) plummet into the Pacific. The only land access is the strenuous 11-mile Kalalau Trail, which follows the jagged, jade-colored coast's gulches and valleys. The first two miles are a popular day hike; beyond that, a permit is required. This is considered one of the country's most dangerous treks, though helicopter tours are another way to see the exquisite terrain."" on Postcard