The beautiful Molokini Crater in Maui, #Hawaii is a natural wonder. It's a perfect place for snorkeling and other water activities.
Koko Head Crater Trail Hike: Looking down. Koko Crater is on the east side of Oahu in the Hawaii Kai neighborhood. The hike takes your from the Koko Head District Park at the bottom of Koko Crater to it's summit. The trail isn't very long, about 1K (1100 yards) but the challenge is the elevation rise of 1,200 feet.