evidence: Much later, in September 21, 1955, a Royal Navy helicopter landed on the tiny island and deposited there three soldiers and a scientist, who proceeded to hoist a Union Flag and set with cement plate whereby taking possession of the place on behalf of Her Majesty Queen Elizabeth II. In 1972, The Island of Rockall Act was passed by parliament, formally declaring the island a part of the United Kingdom. But that claim has not been officially recognized by any other state. [...] In order to prove Rockall can sustain habitation, and therefore is a sovereign part of British territory, a former SAS soldier Tom McClean lived on the barren rock for a record 40 days in 1985. This feat of endurance was broken in 1997, when Greenpeace activists landed on the island and spent 42 days on it as a publicity stunt. They claimed Rockall as a micro-nation and renamed it Waveland. They even unscrewed the 1955 plaque and re-fixed it back-to-front.