Most of the coastline of the Big Island consists of lava rocks, but a few stretches of beach exist with jet-black sand created by finely crushed volcanic soil. These black sand beaches are a wonder to behold and a unique, must-see attraction for anyone visiting Hawaii's newest island. Punaluu Beach on the south shore is the most famous and is home to turtles that like to rest there. Waipio Valley, though remote, has its own black sand beach as well.