The Horizontal Falls, or Horizontal Waterfalls, nicknamed the "Horries" and known as Garaanngaddim by the local Indigenous people, are an unusual natural phenomenon on the coast of the Kimberley region in Western Australia, where tidal flows cause waterfalls on the ebb and flow of each tide. The Lalang-garram / Horizontal Falls Marine Park is a protected area covering the falls and wider area. Description The falls form when seawater rushes through two short and narrow gorges which are about apart from each other. They are located in the coastal McLarty Ranges situated within Talbot Bay (Ganbadba) within the Buccaneer Archipelago. The seaward gap is about wide and the landward one is about . The natural phenomenon is caused by the changing local sea level due to tides of up to . The water builds up on one side or the other of the gaps faster than it can flow through them, creating a waterfall up to high. With each change of the tide, the direction of the falls reverses from inflow to outflow and back again. The Horizontal Falls have been described by naturalist David Attenborough as "one of the greatest wonders of the natural world". Boats are able to travel through the gap, and thrill-seeking tourists are catered for by several tourism companies. On May 27 2022, the Falls Express was conducting a tour of the natural phenomena, about 250km north-east of Broome, when it ran into trouble with 26 passengers and two crew on board. The vessel appeared to have collided with a rock wall. More than a dozen tourists were left with critical injuries and required surgery. The safe rescue of passengers was made more difficult due to the falls remote location and accessibility only by sea and air. The presence of box jellyfish and estuarine crocodiles at the falls made rescue efforts more urgent. Marine parks The Kimberley Marine Park is a Commonwealth government area covered by the national EPBC Act, covering an expanse of ocean outside the limits of the Camden Sound and other state parks, stretching from south of King Sound to nearly the top of the North Kimberley Marine Park. This area consists mostly of Multiple Use Zone (IUCN VI), but also includes sections of national park (IUCN II) and Habitat Protection (IUCN IV) zones, the latter two mostly just outside the Camden Sound and King Sound areas. Lalang-garram / Horizontal Falls Marine