Hiking the entire rim of Ka’au Crater in Palolo Valley, Oahu, Hawaii on June 13th, 2010. The hike consisted of following a contour trail below the crest of Palolo Middle Ridge, passing two waterfalls and climbing a third waterfall, ascending the east rim to the Ko’olau summit, turning left along the Ko’olau summit to reach a trail that descends the west rim of the crater, and then heading south on the crest of Palolo Middle Ridge. Island Trails KaleoLancaster.blogspot.com