Combining valley, waterfall, ridge and summit hikes into one, Kaau Crater Rim Trail is by far one of my favorite trails on the island of Oahu.
There are a couple different routes you can follow to hike in Palolo. (1) You can either go up to the summit via the valley trails to the waterfalls on the east side of Kaau Crater and to the Koolau Summit, descend the same way; (2) Go UP the previous described and descend on the ridge trail at the south of the Kaau Crater; or (3) Go UP the previous described and travel around the crater rim (in either direction) at the top of the waterfall and descend as described in (1) and (2). I'll post a map of this later, but today we (Jennifer Liu, Reanne Solomon, Seth Eason and I) decided to do option (3). To view more information about this hike or to go back to the blogpost, Click here.