Fifteen years ago we were in Kauai’i celebrating anniversaries. Not far from our lodging was the trailhead to the Nounou Mountain (aka Sleeping Giant) path. Round trip was a 3.5 miles with a 948 foot elevation change through rugged jungle terrain. The final pitch was very steep, requiring careful steps to avoid a nasty tumble back down the steep trail. The view at the top gloriusly revealed the ocean, inland mountains and the shoreline.
More pictures of the hike can be seen at: https://eskildoodle.com/sleeping-giant-trail-kauaii/