The 4th highest waterfall in the world is generally recognized as Olo'upena Falls, located on the remote northeastern coast of the Hawaiian island of Molokai. This stunning waterfall is a "tiered" or "horsetail" type and drops a total of 2,953 feet (900 meters) down some of the tallest seaside cliffs in the world. Because it is situated on a vertical cliff face that is nearly inaccessible by land, Olo'upena Falls is rarely seen by tourists except from the air via a helicopter tour or from the ocean via a boat. The waterfall is seasonal and is most impressive during the rainy season when multiple streams of water plunge directly into the Pacific Ocean. It is often cited in a list of the "Big Four" along with Angel Falls in Venezuela (1st), Tugela Falls in South Africa (2nd), and Las Tres Hermanas in Peru (3rd). The height of waterfalls can be a point of geographic debate depending on whether one measures the "total vertical drop" or the "longest single unbroken drop," but under the standard total-height criteria used by the World Waterfall Database, Olo'upena remains a firm fixture at the number four spot, showcasing the dramatic volcanic topography of the Hawaiian archipelago.