This is an old railroad track that goes up the side of a volcano. It is mostly steps on the ties, but they are not even. This was the first time I climbed Koko Head. It took me an hour to get to the top. I brought water and hiking poles. There is a trail that goes around the rim and down to the cauldron where there is a garden. The views are very rewarding. I will do this again when I return to Hawaii.