Puʻu Mahana is an ancient cinder cone near the southern tip of the island. It is best known for Papakōlea beach, the green sand beach, which formed when the ocean cut into one side of the pu’u, creating the bay seen here. The sand’s green color is due to the presence of the mineral olivine. (More photos here.)
Posted in response to Becky’s April Squares challenge theme of ‘Top.’ See more responses here.