The Hana-Waianapanapa Trail follows a portion of the ancient “Kings Highway” from Pailoa Bay in Waianapanapa State Park to Kainalimu Bay in a shady heliotrope grove northwest of Hana Bay. The hike is 4.5 miles total length out and back, duration: 2.5 hours.The trail follows the jagged, windswept coastal cliffs, crossing lava flows above caves, underground tunnels and irregular islets,  passing blowholes, sea arches, tidepools and an ancient Hawaiian temple site. Smooth hand-set stepping stones are still in place along the  lava and cinder path. More information and a free route map are available from Hana Picnic Co.